Home / 687,081.74-948,175.20-381,164.18

Finding the Fourth Proportional to 687,081.74, 948,175.20 and 381,164.18

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Solution

The fourth proportional to 687,081.74, 948,175.20 and 381,164.18 is: 526,007.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,081.74 : 948,175.20 = 381,164.18 : x
  2. Step 2: Convert to fraction form
    687,081.74/948,175.20 = 381,164.18/x
  3. Step 3: Cross multiply
    687,081.74x = 948,175.20 × 381,164.18
  4. Step 4: Simplify right side
    687,081.74x = 361,410,417,863.46
  5. Step 5: Solve for x
    x = 361,410,417,863.46/687,081.74
  6. Step 6: Final answer
    x = 526,007.90

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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.