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Finding the Fourth Proportional to 495,408.50, 743,398.78 and 267,704.90

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Solution

The fourth proportional to 495,408.50, 743,398.78 and 267,704.90 is: 401,711.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,408.50 : 743,398.78 = 267,704.90 : x
  2. Step 2: Convert to fraction form
    495,408.50/743,398.78 = 267,704.90/x
  3. Step 3: Cross multiply
    495,408.50x = 743,398.78 × 267,704.90
  4. Step 4: Simplify right side
    495,408.50x = 199,011,493,834.08
  5. Step 5: Solve for x
    x = 199,011,493,834.08/495,408.50
  6. Step 6: Final answer
    x = 401,711.90

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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.