Home / 687,419,542.10-948,719,746.11-386,054,380.55

Finding the Fourth Proportional to 687,419,542.10, 948,719,746.11 and 386,054,380.55

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Solution

The fourth proportional to 687,419,542.10, 948,719,746.11 and 386,054,380.55 is: 532,800,410.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,419,542.10 : 948,719,746.11 = 386,054,380.55 : x
  2. Step 2: Convert to fraction form
    687,419,542.10/948,719,746.11 = 386,054,380.55/x
  3. Step 3: Cross multiply
    687,419,542.10x = 948,719,746.11 × 386,054,380.55
  4. Step 4: Simplify right side
    687,419,542.10x = 366,257,413,895,305,728
  5. Step 5: Solve for x
    x = 366,257,413,895,305,728/687,419,542.10
  6. Step 6: Final answer
    x = 532,800,410.04

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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.