Home / 409,502,836.10-613,279,221.32-261,491,934.90

Finding the Fourth Proportional to 409,502,836.10, 613,279,221.32 and 261,491,934.90

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Solution

The fourth proportional to 409,502,836.10, 613,279,221.32 and 261,491,934.90 is: 391,615,285.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,502,836.10 : 613,279,221.32 = 261,491,934.90 : x
  2. Step 2: Convert to fraction form
    409,502,836.10/613,279,221.32 = 261,491,934.90/x
  3. Step 3: Cross multiply
    409,502,836.10x = 613,279,221.32 × 261,491,934.90
  4. Step 4: Simplify right side
    409,502,836.10x = 160,367,570,216,932,160
  5. Step 5: Solve for x
    x = 160,367,570,216,932,160/409,502,836.10
  6. Step 6: Final answer
    x = 391,615,285.85

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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.