Finding the Fourth Proportional to 687,037.20, 948,117.02 and 381,133.62
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Solution
The fourth proportional to 687,037.20, 948,117.02 and 381,133.62 is: 525,967.55
Step by Step Solution
- Step 1: Write the proportion equation
687,037.20 : 948,117.02 = 381,133.62 : x - Step 2: Convert to fraction form
687,037.20/948,117.02 = 381,133.62/x - Step 3: Cross multiply
687,037.20x = 948,117.02 × 381,133.62 - Step 4: Simplify right side
687,037.20x = 361,359,272,016.21 - Step 5: Solve for x
x = 361,359,272,016.21/687,037.20 - Step 6: Final answer
x = 525,967.55
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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.