Home / 431,568,002.10-647,352,003.15-392,028,791.70

Finding the Fourth Proportional to 431,568,002.10, 647,352,003.15 and 392,028,791.70

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Solution

The fourth proportional to 431,568,002.10, 647,352,003.15 and 392,028,791.70 is: 588,043,187.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,568,002.10 : 647,352,003.15 = 392,028,791.70 : x
  2. Step 2: Convert to fraction form
    431,568,002.10/647,352,003.15 = 392,028,791.70/x
  3. Step 3: Cross multiply
    431,568,002.10x = 647,352,003.15 × 392,028,791.70
  4. Step 4: Simplify right side
    431,568,002.10x = 253,780,623,599,469,088
  5. Step 5: Solve for x
    x = 253,780,623,599,469,088/431,568,002.10
  6. Step 6: Final answer
    x = 588,043,187.55

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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.