Finding the Fourth Proportional to 491,781.40, 737,672.10 and 487,115.80
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Solution
The fourth proportional to 491,781.40, 737,672.10 and 487,115.80 is: 730,673.70
Step by Step Solution
- Step 1: Write the proportion equation
491,781.40 : 737,672.10 = 487,115.80 : x - Step 2: Convert to fraction form
491,781.40/737,672.10 = 487,115.80/x - Step 3: Cross multiply
491,781.40x = 737,672.10 × 487,115.80 - Step 4: Simplify right side
491,781.40x = 359,331,735,129.18 - Step 5: Solve for x
x = 359,331,735,129.18/491,781.40 - Step 6: Final answer
x = 730,673.70
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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.