Finding the Fourth Proportional to 861,724.68, 1,291,987.44 and 381,691.92
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Solution
The fourth proportional to 861,724.68, 1,291,987.44 and 381,691.92 is: 572,272.30
Step by Step Solution
- Step 1: Write the proportion equation
861,724.68 : 1,291,987.44 = 381,691.92 : x - Step 2: Convert to fraction form
861,724.68/1,291,987.44 = 381,691.92/x - Step 3: Cross multiply
861,724.68x = 1,291,987.44 × 381,691.92 - Step 4: Simplify right side
861,724.68x = 493,141,166,589.49 - Step 5: Solve for x
x = 493,141,166,589.49/861,724.68 - Step 6: Final answer
x = 572,272.30
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.