Finding the Fourth Proportional to 715,264.74, 987,082.74 and 392,995.74
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Solution
The fourth proportional to 715,264.74, 987,082.74 and 392,995.74 is: 542,343.68
Step by Step Solution
- Step 1: Write the proportion equation
715,264.74 : 987,082.74 = 392,995.74 : x - Step 2: Convert to fraction form
715,264.74/987,082.74 = 392,995.74/x - Step 3: Cross multiply
715,264.74x = 987,082.74 × 392,995.74 - Step 4: Simplify right side
715,264.74x = 387,919,311,847.53 - Step 5: Solve for x
x = 387,919,311,847.53/715,264.74 - Step 6: Final answer
x = 542,343.68
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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.