Home / 431,810,517.57-647,715,755.59-120,964,158.21

Finding the Fourth Proportional to 431,810,517.57, 647,715,755.59 and 120,964,158.21

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Solution

The fourth proportional to 431,810,517.57, 647,715,755.59 and 120,964,158.21 is: 181,446,231.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,810,517.57 : 647,715,755.59 = 120,964,158.21 : x
  2. Step 2: Convert to fraction form
    431,810,517.57/647,715,755.59 = 120,964,158.21/x
  3. Step 3: Cross multiply
    431,810,517.57x = 647,715,755.59 × 120,964,158.21
  4. Step 4: Simplify right side
    431,810,517.57x = 78,350,391,134,298,448
  5. Step 5: Solve for x
    x = 78,350,391,134,298,448/431,810,517.57
  6. Step 6: Final answer
    x = 181,446,231.50

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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.