Finding the Fourth Proportional to 870,836.41, 1,201,769.09 and 478,385.91
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Solution
The fourth proportional to 870,836.41, 1,201,769.09 and 478,385.91 is: 660,180.71
Step by Step Solution
- Step 1: Write the proportion equation
870,836.41 : 1,201,769.09 = 478,385.91 : x - Step 2: Convert to fraction form
870,836.41/1,201,769.09 = 478,385.91/x - Step 3: Cross multiply
870,836.41x = 1,201,769.09 × 478,385.91 - Step 4: Simplify right side
870,836.41x = 574,909,399,729.52 - Step 5: Solve for x
x = 574,909,399,729.52/870,836.41 - Step 6: Final answer
x = 660,180.71
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.