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Finding the Fourth Proportional to 542,192.14, 812,540.22 and 391,229.56

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Solution

The fourth proportional to 542,192.14, 812,540.22 and 391,229.56 is: 586,304.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,192.14 : 812,540.22 = 391,229.56 : x
  2. Step 2: Convert to fraction form
    542,192.14/812,540.22 = 391,229.56/x
  3. Step 3: Cross multiply
    542,192.14x = 812,540.22 × 391,229.56
  4. Step 4: Simplify right side
    542,192.14x = 317,889,752,752.90
  5. Step 5: Solve for x
    x = 317,889,752,752.90/542,192.14
  6. Step 6: Final answer
    x = 586,304.61

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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.