Finding the Fourth Proportional to 613,387.60, 918,113.10 and 479,543.20
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Solution
The fourth proportional to 613,387.60, 918,113.10 and 479,543.20 is: 717,775.99
Step by Step Solution
- Step 1: Write the proportion equation
613,387.60 : 918,113.10 = 479,543.20 : x - Step 2: Convert to fraction form
613,387.60/918,113.10 = 479,543.20/x - Step 3: Cross multiply
613,387.60x = 918,113.10 × 479,543.20 - Step 4: Simplify right side
613,387.60x = 440,274,893,935.92 - Step 5: Solve for x
x = 440,274,893,935.92/613,387.60 - Step 6: Final answer
x = 717,775.99
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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.