Home / 744,961.62-1,028,155.38-418,311.30

Finding the Fourth Proportional to 744,961.62, 1,028,155.38 and 418,311.30

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Solution

The fourth proportional to 744,961.62, 1,028,155.38 and 418,311.30 is: 577,330.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    744,961.62 : 1,028,155.38 = 418,311.30 : x
  2. Step 2: Convert to fraction form
    744,961.62/1,028,155.38 = 418,311.30/x
  3. Step 3: Cross multiply
    744,961.62x = 1,028,155.38 × 418,311.30
  4. Step 4: Simplify right side
    744,961.62x = 430,089,013,609.79
  5. Step 5: Solve for x
    x = 430,089,013,609.79/744,961.62
  6. Step 6: Final answer
    x = 577,330.43

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Double scale
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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.