Finding the Fourth Proportional to 642,139.20, 886,747.76 and 480,713.99
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Solution
The fourth proportional to 642,139.20, 886,747.76 and 480,713.99 is: 663,831.22
Step by Step Solution
- Step 1: Write the proportion equation
642,139.20 : 886,747.76 = 480,713.99 : x - Step 2: Convert to fraction form
642,139.20/886,747.76 = 480,713.99/x - Step 3: Cross multiply
642,139.20x = 886,747.76 × 480,713.99 - Step 4: Simplify right side
642,139.20x = 426,272,046,995.85 - Step 5: Solve for x
x = 426,272,046,995.85/642,139.20 - Step 6: Final answer
x = 663,831.22
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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.