Finding the Fourth Proportional to 718,535.60, 991,586.08 and 396,257.12
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Solution
The fourth proportional to 718,535.60, 991,586.08 and 396,257.12 is: 546,838.66
Step by Step Solution
- Step 1: Write the proportion equation
718,535.60 : 991,586.08 = 396,257.12 : x - Step 2: Convert to fraction form
718,535.60/991,586.08 = 396,257.12/x - Step 3: Cross multiply
718,535.60x = 991,586.08 × 396,257.12 - Step 4: Simplify right side
718,535.60x = 392,923,044,292.89 - Step 5: Solve for x
x = 392,923,044,292.89/718,535.60 - Step 6: Final answer
x = 546,838.66
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.