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Finding the Fourth Proportional to 442,117.80, 663,176.70 and 403,410.60

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Solution

The fourth proportional to 442,117.80, 663,176.70 and 403,410.60 is: 605,115.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,117.80 : 663,176.70 = 403,410.60 : x
  2. Step 2: Convert to fraction form
    442,117.80/663,176.70 = 403,410.60/x
  3. Step 3: Cross multiply
    442,117.80x = 663,176.70 × 403,410.60
  4. Step 4: Simplify right side
    442,117.80x = 267,532,510,453.02
  5. Step 5: Solve for x
    x = 267,532,510,453.02/442,117.80
  6. Step 6: Final answer
    x = 605,115.90

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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.