Home / 495,905.60-743,858.40-318,612.80

Finding the Fourth Proportional to 495,905.60, 743,858.40 and 318,612.80

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Solution

The fourth proportional to 495,905.60, 743,858.40 and 318,612.80 is: 477,919.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,905.60 : 743,858.40 = 318,612.80 : x
  2. Step 2: Convert to fraction form
    495,905.60/743,858.40 = 318,612.80/x
  3. Step 3: Cross multiply
    495,905.60x = 743,858.40 × 318,612.80
  4. Step 4: Simplify right side
    495,905.60x = 237,002,807,627.52
  5. Step 5: Solve for x
    x = 237,002,807,627.52/495,905.60
  6. Step 6: Final answer
    x = 477,919.20

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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.