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Finding the Fourth Proportional to 495,654.08, 743,813.28 and 318,285.66

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Solution

The fourth proportional to 495,654.08, 743,813.28 and 318,285.66 is: 477,641.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,654.08 : 743,813.28 = 318,285.66 : x
  2. Step 2: Convert to fraction form
    495,654.08/743,813.28 = 318,285.66/x
  3. Step 3: Cross multiply
    495,654.08x = 743,813.28 × 318,285.66
  4. Step 4: Simplify right side
    495,654.08x = 236,745,100,741.57
  5. Step 5: Solve for x
    x = 236,745,100,741.57/495,654.08
  6. Step 6: Final answer
    x = 477,641.79

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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.