Home / 644,306.13-966,453.05-391,656.39

Finding the Fourth Proportional to 644,306.13, 966,453.05 and 391,656.39

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Solution

The fourth proportional to 644,306.13, 966,453.05 and 391,656.39 is: 587,480.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,306.13 : 966,453.05 = 391,656.39 : x
  2. Step 2: Convert to fraction form
    644,306.13/966,453.05 = 391,656.39/x
  3. Step 3: Cross multiply
    644,306.13x = 966,453.05 × 391,656.39
  4. Step 4: Simplify right side
    644,306.13x = 378,517,510,709.21
  5. Step 5: Solve for x
    x = 378,517,510,709.21/644,306.13
  6. Step 6: Final answer
    x = 587,480.85

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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.