Home / 687,380.94-948,655.71-381,459.42

Finding the Fourth Proportional to 687,380.94, 948,655.71 and 381,459.42

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Solution

The fourth proportional to 687,380.94, 948,655.71 and 381,459.42 is: 526,452.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,380.94 : 948,655.71 = 381,459.42 : x
  2. Step 2: Convert to fraction form
    687,380.94/948,655.71 = 381,459.42/x
  3. Step 3: Cross multiply
    687,380.94x = 948,655.71 × 381,459.42
  4. Step 4: Simplify right side
    687,380.94x = 361,873,656,916.29
  5. Step 5: Solve for x
    x = 361,873,656,916.29/687,380.94
  6. Step 6: Final answer
    x = 526,452.85

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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.