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Finding the Fourth Proportional to 391,540.20, 585,998.10 and 391,540.20

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Solution

The fourth proportional to 391,540.20, 585,998.10 and 391,540.20 is: 585,998.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,540.20 : 585,998.10 = 391,540.20 : x
  2. Step 2: Convert to fraction form
    391,540.20/585,998.10 = 391,540.20/x
  3. Step 3: Cross multiply
    391,540.20x = 585,998.10 × 391,540.20
  4. Step 4: Simplify right side
    391,540.20x = 229,441,813,273.62
  5. Step 5: Solve for x
    x = 229,441,813,273.62/391,540.20
  6. Step 6: Final answer
    x = 585,998.10

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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.