Home / 687,481.64-948,710.39-381,540.26

Finding the Fourth Proportional to 687,481.64, 948,710.39 and 381,540.26

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Solution

The fourth proportional to 687,481.64, 948,710.39 and 381,540.26 is: 526,517.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,481.64 : 948,710.39 = 381,540.26 : x
  2. Step 2: Convert to fraction form
    687,481.64/948,710.39 = 381,540.26/x
  3. Step 3: Cross multiply
    687,481.64x = 948,710.39 × 381,540.26
  4. Step 4: Simplify right side
    687,481.64x = 361,971,202,214.05
  5. Step 5: Solve for x
    x = 361,971,202,214.05/687,481.64
  6. Step 6: Final answer
    x = 526,517.63

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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.