Home / 687,324.18-948,512.66-381,401.76

Finding the Fourth Proportional to 687,324.18, 948,512.66 and 381,401.76

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Solution

The fourth proportional to 687,324.18, 948,512.66 and 381,401.76 is: 526,337.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,324.18 : 948,512.66 = 381,401.76 : x
  2. Step 2: Convert to fraction form
    687,324.18/948,512.66 = 381,401.76/x
  3. Step 3: Cross multiply
    687,324.18x = 948,512.66 × 381,401.76
  4. Step 4: Simplify right side
    687,324.18x = 361,764,397,906.28
  5. Step 5: Solve for x
    x = 361,764,397,906.28/687,324.18
  6. Step 6: Final answer
    x = 526,337.37

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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.