Home / 667,747.20-1,001,620.80-418,915.20

Finding the Fourth Proportional to 667,747.20, 1,001,620.80 and 418,915.20

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Solution

The fourth proportional to 667,747.20, 1,001,620.80 and 418,915.20 is: 628,372.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,747.20 : 1,001,620.80 = 418,915.20 : x
  2. Step 2: Convert to fraction form
    667,747.20/1,001,620.80 = 418,915.20/x
  3. Step 3: Cross multiply
    667,747.20x = 1,001,620.80 × 418,915.20
  4. Step 4: Simplify right side
    667,747.20x = 419,594,177,756.16
  5. Step 5: Solve for x
    x = 419,594,177,756.16/667,747.20
  6. Step 6: Final answer
    x = 628,372.80

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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.