Finding the Fourth Proportional to 804,943.10, 1,207,414.65 and 431,695.10
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Solution
The fourth proportional to 804,943.10, 1,207,414.65 and 431,695.10 is: 647,542.65
Step by Step Solution
- Step 1: Write the proportion equation
804,943.10 : 1,207,414.65 = 431,695.10 : x - Step 2: Convert to fraction form
804,943.10/1,207,414.65 = 431,695.10/x - Step 3: Cross multiply
804,943.10x = 1,207,414.65 × 431,695.10 - Step 4: Simplify right side
804,943.10x = 521,234,988,073.22 - Step 5: Solve for x
x = 521,234,988,073.22/804,943.10 - Step 6: Final answer
x = 647,542.65
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.