Home / 721,921.34-1,082,517.50-422,491.88

Finding the Fourth Proportional to 721,921.34, 1,082,517.50 and 422,491.88

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Solution

The fourth proportional to 721,921.34, 1,082,517.50 and 422,491.88 is: 633,524.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,921.34 : 1,082,517.50 = 422,491.88 : x
  2. Step 2: Convert to fraction form
    721,921.34/1,082,517.50 = 422,491.88/x
  3. Step 3: Cross multiply
    721,921.34x = 1,082,517.50 × 422,491.88
  4. Step 4: Simplify right side
    721,921.34x = 457,354,853,707.90
  5. Step 5: Solve for x
    x = 457,354,853,707.90/721,921.34
  6. Step 6: Final answer
    x = 633,524.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.