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Finding the Fourth Proportional to 495,906.60, 743,859.90 and 318,613.80

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Solution

The fourth proportional to 495,906.60, 743,859.90 and 318,613.80 is: 477,920.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,906.60 : 743,859.90 = 318,613.80 : x
  2. Step 2: Convert to fraction form
    495,906.60/743,859.90 = 318,613.80/x
  3. Step 3: Cross multiply
    495,906.60x = 743,859.90 × 318,613.80
  4. Step 4: Simplify right side
    495,906.60x = 237,004,029,406.62
  5. Step 5: Solve for x
    x = 237,004,029,406.62/495,906.60
  6. Step 6: Final answer
    x = 477,920.70

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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.