document.write( "Question 731211: I'm trying to work a problem on how long it will take a savings acct bal to reach 1,000,000 if i deposited 2947 at 9% interest compounded quarterly,\r
\n" ); document.write( "\n" ); document.write( "I'm using the equation A=P(1+i)^n\r
\n" ); document.write( "\n" ); document.write( "with no luck,,please help
\n" ); document.write( "

Algebra.Com's Answer #447047 by lwsshak3(11628)\"\" \"About 
You can put this solution on YOUR website!
how long it will take a savings acct bal to reach 1,000,000 if i deposited 2947 at 9% interest compounded quarterly
\n" ); document.write( "***
\n" ); document.write( "A=P(1+i)^n
\n" ); document.write( "P=initial investment=2947
\n" ); document.write( "i=interest per period(quarter)=.09/4=0.0225
\n" ); document.write( "n=number of periods
\n" ); document.write( "A=amount after n periods=10^6
\n" ); document.write( "..
\n" ); document.write( "10^6=2497(1+.0225)^n
\n" ); document.write( "10^6/2497=(1.0225)^n
\n" ); document.write( "take log of both sides
\n" ); document.write( "log(10^6)-log(2497)=nlog(1.0225)
\n" ); document.write( "log(10^6)=6
\n" ); document.write( "6-log(2497)/(log(1.0225))=n
\n" ); document.write( "n≈269 periods(quarters) or ≈ 67 yrs
\n" ); document.write( "
\n" );