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Finding the Fourth Proportional to 444,839.20, 667,258.80 and 287,245.60

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Solution

The fourth proportional to 444,839.20, 667,258.80 and 287,245.60 is: 430,868.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,839.20 : 667,258.80 = 287,245.60 : x
  2. Step 2: Convert to fraction form
    444,839.20/667,258.80 = 287,245.60/x
  3. Step 3: Cross multiply
    444,839.20x = 667,258.80 × 287,245.60
  4. Step 4: Simplify right side
    444,839.20x = 191,667,154,361.28
  5. Step 5: Solve for x
    x = 191,667,154,361.28/444,839.20
  6. Step 6: Final answer
    x = 430,868.40

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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.