Home / 687,178.39-948,274.17-381,251.53

Finding the Fourth Proportional to 687,178.39, 948,274.17 and 381,251.53

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Solution

The fourth proportional to 687,178.39, 948,274.17 and 381,251.53 is: 526,109.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,178.39 : 948,274.17 = 381,251.53 : x
  2. Step 2: Convert to fraction form
    687,178.39/948,274.17 = 381,251.53/x
  3. Step 3: Cross multiply
    687,178.39x = 948,274.17 × 381,251.53
  4. Step 4: Simplify right side
    687,178.39x = 361,530,978,171.98
  5. Step 5: Solve for x
    x = 361,530,978,171.98/687,178.39
  6. Step 6: Final answer
    x = 526,109.35

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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.