Home / 391,134.20-587,414.10-342,145.40

Finding the Fourth Proportional to 391,134.20, 587,414.10 and 342,145.40

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Solution

The fourth proportional to 391,134.20, 587,414.10 and 342,145.40 is: 513,841.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,134.20 : 587,414.10 = 342,145.40 : x
  2. Step 2: Convert to fraction form
    391,134.20/587,414.10 = 342,145.40/x
  3. Step 3: Cross multiply
    391,134.20x = 587,414.10 × 342,145.40
  4. Step 4: Simplify right side
    391,134.20x = 200,981,032,210.14
  5. Step 5: Solve for x
    x = 200,981,032,210.14/391,134.20
  6. Step 6: Final answer
    x = 513,841.62

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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.