Finding the Fourth Proportional to 658,729.20, 988,093.80 and 491,423.70
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Solution
The fourth proportional to 658,729.20, 988,093.80 and 491,423.70 is: 737,135.55
Step by Step Solution
- Step 1: Write the proportion equation
658,729.20 : 988,093.80 = 491,423.70 : x - Step 2: Convert to fraction form
658,729.20/988,093.80 = 491,423.70/x - Step 3: Cross multiply
658,729.20x = 988,093.80 × 491,423.70 - Step 4: Simplify right side
658,729.20x = 485,572,711,143.06 - Step 5: Solve for x
x = 485,572,711,143.06/658,729.20 - Step 6: Final answer
x = 737,135.55
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Double scale
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Similar ratio
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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.