Home / 687,187.43-948,286.50-381,260.55

Finding the Fourth Proportional to 687,187.43, 948,286.50 and 381,260.55

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Solution

The fourth proportional to 687,187.43, 948,286.50 and 381,260.55 is: 526,121.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,187.43 : 948,286.50 = 381,260.55 : x
  2. Step 2: Convert to fraction form
    687,187.43/948,286.50 = 381,260.55/x
  3. Step 3: Cross multiply
    687,187.43x = 948,286.50 × 381,260.55
  4. Step 4: Simplify right side
    687,187.43x = 361,544,232,547.58
  5. Step 5: Solve for x
    x = 361,544,232,547.58/687,187.43
  6. Step 6: Final answer
    x = 526,121.72

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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.