Home / 431,413,793.70-647,120,690.55-299,403,849.30

Finding the Fourth Proportional to 431,413,793.70, 647,120,690.55 and 299,403,849.30

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Solution

The fourth proportional to 431,413,793.70, 647,120,690.55 and 299,403,849.30 is: 449,105,773.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,413,793.70 : 647,120,690.55 = 299,403,849.30 : x
  2. Step 2: Convert to fraction form
    431,413,793.70/647,120,690.55 = 299,403,849.30/x
  3. Step 3: Cross multiply
    431,413,793.70x = 647,120,690.55 × 299,403,849.30
  4. Step 4: Simplify right side
    431,413,793.70x = 193,750,425,712,344,128
  5. Step 5: Solve for x
    x = 193,750,425,712,344,128/431,413,793.70
  6. Step 6: Final answer
    x = 449,105,773.95

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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.