Finding the Fourth Proportional to 516,839.52, 713,221.92 and 287,395.68
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Solution
The fourth proportional to 516,839.52, 713,221.92 and 287,395.68 is: 396,596.80
Step by Step Solution
- Step 1: Write the proportion equation
516,839.52 : 713,221.92 = 287,395.68 : x - Step 2: Convert to fraction form
516,839.52/713,221.92 = 287,395.68/x - Step 3: Cross multiply
516,839.52x = 713,221.92 × 287,395.68 - Step 4: Simplify right side
516,839.52x = 204,976,898,689.31 - Step 5: Solve for x
x = 204,976,898,689.31/516,839.52 - Step 6: Final answer
x = 396,596.80
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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.