Home / 667,454.40-1,001,469.60-387,211.20

Finding the Fourth Proportional to 667,454.40, 1,001,469.60 and 387,211.20

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Solution

The fourth proportional to 667,454.40, 1,001,469.60 and 387,211.20 is: 580,983.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,454.40 : 1,001,469.60 = 387,211.20 : x
  2. Step 2: Convert to fraction form
    667,454.40/1,001,469.60 = 387,211.20/x
  3. Step 3: Cross multiply
    667,454.40x = 1,001,469.60 × 387,211.20
  4. Step 4: Simplify right side
    667,454.40x = 387,780,245,579.52
  5. Step 5: Solve for x
    x = 387,780,245,579.52/667,454.40
  6. Step 6: Final answer
    x = 580,983.88

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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.