Home / 619,123.12-928,684.89-408,711.85

Finding the Fourth Proportional to 619,123.12, 928,684.89 and 408,711.85

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Solution

The fourth proportional to 619,123.12, 928,684.89 and 408,711.85 is: 613,067.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,123.12 : 928,684.89 = 408,711.85 : x
  2. Step 2: Convert to fraction form
    619,123.12/928,684.89 = 408,711.85/x
  3. Step 3: Cross multiply
    619,123.12x = 928,684.89 × 408,711.85
  4. Step 4: Simplify right side
    619,123.12x = 379,564,519,458.95
  5. Step 5: Solve for x
    x = 379,564,519,458.95/619,123.12
  6. Step 6: Final answer
    x = 613,067.91

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Similar ratio
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1.5x scale

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.