Finding the Fourth Proportional to 990,115.74, 1,485,493.46 and 457,985.84
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Solution
The fourth proportional to 990,115.74, 1,485,493.46 and 457,985.84 is: 687,126.70
Step by Step Solution
- Step 1: Write the proportion equation
990,115.74 : 1,485,493.46 = 457,985.84 : x - Step 2: Convert to fraction form
990,115.74/1,485,493.46 = 457,985.84/x - Step 3: Cross multiply
990,115.74x = 1,485,493.46 × 457,985.84 - Step 4: Simplify right side
990,115.74x = 680,334,960,375.21 - Step 5: Solve for x
x = 680,334,960,375.21/990,115.74 - Step 6: Final answer
x = 687,126.70
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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.