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Finding the Fourth Proportional to 495,941.70, 743,912.55 and 318,794.70

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Solution

The fourth proportional to 495,941.70, 743,912.55 and 318,794.70 is: 478,192.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,941.70 : 743,912.55 = 318,794.70 : x
  2. Step 2: Convert to fraction form
    495,941.70/743,912.55 = 318,794.70/x
  3. Step 3: Cross multiply
    495,941.70x = 743,912.55 × 318,794.70
  4. Step 4: Simplify right side
    495,941.70x = 237,155,378,203.49
  5. Step 5: Solve for x
    x = 237,155,378,203.49/495,941.70
  6. Step 6: Final answer
    x = 478,192.05

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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.