Home / 681,599,760.62-940,567,132.49-395,469,120.78

Finding the Fourth Proportional to 681,599,760.62, 940,567,132.49 and 395,469,120.78

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Solution

The fourth proportional to 681,599,760.62, 940,567,132.49 and 395,469,120.78 is: 545,723,866.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,599,760.62 : 940,567,132.49 = 395,469,120.78 : x
  2. Step 2: Convert to fraction form
    681,599,760.62/940,567,132.49 = 395,469,120.78/x
  3. Step 3: Cross multiply
    681,599,760.62x = 940,567,132.49 × 395,469,120.78
  4. Step 4: Simplify right side
    681,599,760.62x = 371,965,256,918,408,704
  5. Step 5: Solve for x
    x = 371,965,256,918,408,704/681,599,760.62
  6. Step 6: Final answer
    x = 545,723,866.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.