document.write( "Question 851136: Find the fifth term of a geometric sequence whose fourth term is
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\n" ); document.write( "16/27 and whose seventh term is 128/729.
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Algebra.Com's Answer #512600 by ewatrrr(24785)\"\" \"About 
You can put this solution on YOUR website!

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document.write( "Hi,
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document.write( "\"a%5Bn%5D+=+a%5B1%5Dr%5E%28n-1%29+\"
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document.write( "\"a%5B4%5D+=+a%5B1%5Dr%5E3+=+16%2F27\" , \"a%5B1%5D+=+16%2F27r%5E3\"
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document.write( "\"a%5B7%5D+=+%2816%2F27r%5E3%29r%5E6+=+128%2F729\"  \"r%5E3+=+%28128%2F729%29%2827%2F16%29\"   r = 2/3
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document.write( " \"a%5B1%5D+=+16%2F%28%2827%29%288%2F27%29%29+=+2+\"
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document.write( "\"a%5B5%5D+=+2%282%2F3%29%5E4+=+32%2F81\" \n" );
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