Finding the Fourth Proportional to 487,789.18, 731,842.88 and 217,884.42
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Solution
The fourth proportional to 487,789.18, 731,842.88 and 217,884.42 is: 326,897.70
Step by Step Solution
- Step 1: Write the proportion equation
487,789.18 : 731,842.88 = 217,884.42 : x - Step 2: Convert to fraction form
487,789.18/731,842.88 = 217,884.42/x - Step 3: Cross multiply
487,789.18x = 731,842.88 × 217,884.42 - Step 4: Simplify right side
487,789.18x = 159,457,161,439.93 - Step 5: Solve for x
x = 159,457,161,439.93/487,789.18 - Step 6: Final answer
x = 326,897.70
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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.