Home / 687,484.11-948,713.82-381,542.73

Finding the Fourth Proportional to 687,484.11, 948,713.82 and 381,542.73

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Solution

The fourth proportional to 687,484.11, 948,713.82 and 381,542.73 is: 526,521.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,484.11 : 948,713.82 = 381,542.73 : x
  2. Step 2: Convert to fraction form
    687,484.11/948,713.82 = 381,542.73/x
  3. Step 3: Cross multiply
    687,484.11x = 948,713.82 × 381,542.73
  4. Step 4: Simplify right side
    687,484.11x = 361,974,860,871.53
  5. Step 5: Solve for x
    x = 361,974,860,871.53/687,484.11
  6. Step 6: Final answer
    x = 526,521.06

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Double scale
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1.5x scale

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.