Home / 687,487.20-948,718.02-381,545.76

Finding the Fourth Proportional to 687,487.20, 948,718.02 and 381,545.76

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Solution

The fourth proportional to 687,487.20, 948,718.02 and 381,545.76 is: 526,525.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,487.20 : 948,718.02 = 381,545.76 : x
  2. Step 2: Convert to fraction form
    687,487.20/948,718.02 = 381,545.76/x
  3. Step 3: Cross multiply
    687,487.20x = 948,718.02 × 381,545.76
  4. Step 4: Simplify right side
    687,487.20x = 361,979,337,966.60
  5. Step 5: Solve for x
    x = 361,979,337,966.60/687,487.20
  6. Step 6: Final answer
    x = 526,525.20

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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.