Home / 391,672,612.80-587,564,906.40-132,899,774.40

Finding the Fourth Proportional to 391,672,612.80, 587,564,906.40 and 132,899,774.40

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Solution

The fourth proportional to 391,672,612.80, 587,564,906.40 and 132,899,774.40 is: 199,368,658.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,672,612.80 : 587,564,906.40 = 132,899,774.40 : x
  2. Step 2: Convert to fraction form
    391,672,612.80/587,564,906.40 = 132,899,774.40/x
  3. Step 3: Cross multiply
    391,672,612.80x = 587,564,906.40 × 132,899,774.40
  4. Step 4: Simplify right side
    391,672,612.80x = 78,087,243,505,917,120
  5. Step 5: Solve for x
    x = 78,087,243,505,917,120/391,672,612.80
  6. Step 6: Final answer
    x = 199,368,658.81

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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.