Finding the Fourth Proportional to 728,761.20, 1,005,691.80 and 406,492.20
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Solution
The fourth proportional to 728,761.20, 1,005,691.80 and 406,492.20 is: 560,959.99
Step by Step Solution
- Step 1: Write the proportion equation
728,761.20 : 1,005,691.80 = 406,492.20 : x - Step 2: Convert to fraction form
728,761.20/1,005,691.80 = 406,492.20/x - Step 3: Cross multiply
728,761.20x = 1,005,691.80 × 406,492.20 - Step 4: Simplify right side
728,761.20x = 408,805,872,303.96 - Step 5: Solve for x
x = 408,805,872,303.96/728,761.20 - Step 6: Final answer
x = 560,959.99
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.