Question 1070213
The ratios of the investments were
9:7:4
The fractions of the total for each investment is:
{{{ 9 / ( 9 + 7 + 4 ) = 9/20 }}}
{{{ 7/20 }}}
{{{ 4/20 }}}
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check:
{{{ 9/20 + 7/20 + 4/20 = 20/20 }}}
OK
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Divided equally, the profits for each are:
{{{ 4800/3 = 1600 }}}
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Divided in propotion to the invesytments:
X receives
{{{ (9/20)*4800 = 2160 }}}
Y receives:
{{{ (7/20)*4800 = 1680 }}}
Z receives
{{{ (4/20)*4800 = 960 }}}
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check:
{{{ 2160 + 1680 + 960 = 4800 }}}
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If profit are divided equally, X gets
{{{ 2160 - 1600 = 560 }}} 
$560
less than if divided by amount invested