Home / 687,098.58-948,197.15-381,174.97

Finding the Fourth Proportional to 687,098.58, 948,197.15 and 381,174.97

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Solution

The fourth proportional to 687,098.58, 948,197.15 and 381,174.97 is: 526,022.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,098.58 : 948,197.15 = 381,174.97 : x
  2. Step 2: Convert to fraction form
    687,098.58/948,197.15 = 381,174.97/x
  3. Step 3: Cross multiply
    687,098.58x = 948,197.15 × 381,174.97
  4. Step 4: Simplify right side
    687,098.58x = 361,429,023,947.16
  5. Step 5: Solve for x
    x = 361,429,023,947.16/687,098.58
  6. Step 6: Final answer
    x = 526,022.08

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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.