Home / 687,016.57-948,098.07-381,082.98

Finding the Fourth Proportional to 687,016.57, 948,098.07 and 381,082.98

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Solution

The fourth proportional to 687,016.57, 948,098.07 and 381,082.98 is: 525,902.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,016.57 : 948,098.07 = 381,082.98 : x
  2. Step 2: Convert to fraction form
    687,016.57/948,098.07 = 381,082.98/x
  3. Step 3: Cross multiply
    687,016.57x = 948,098.07 × 381,082.98
  4. Step 4: Simplify right side
    687,016.57x = 361,304,037,847.85
  5. Step 5: Solve for x
    x = 361,304,037,847.85/687,016.57
  6. Step 6: Final answer
    x = 525,902.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.