Home / 689,432.64-1,034,149.26-216,154.89

Finding the Fourth Proportional to 689,432.64, 1,034,149.26 and 216,154.89

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Solution

The fourth proportional to 689,432.64, 1,034,149.26 and 216,154.89 is: 324,232.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,432.64 : 1,034,149.26 = 216,154.89 : x
  2. Step 2: Convert to fraction form
    689,432.64/1,034,149.26 = 216,154.89/x
  3. Step 3: Cross multiply
    689,432.64x = 1,034,149.26 × 216,154.89
  4. Step 4: Simplify right side
    689,432.64x = 223,536,419,538.88
  5. Step 5: Solve for x
    x = 223,536,419,538.88/689,432.64
  6. Step 6: Final answer
    x = 324,232.43

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Double scale
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Similar ratio
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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.