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Finding the Fourth Proportional to 495,572.80, 743,359.20 and 408,092.80

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Solution

The fourth proportional to 495,572.80, 743,359.20 and 408,092.80 is: 612,139.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,572.80 : 743,359.20 = 408,092.80 : x
  2. Step 2: Convert to fraction form
    495,572.80/743,359.20 = 408,092.80/x
  3. Step 3: Cross multiply
    495,572.80x = 743,359.20 × 408,092.80
  4. Step 4: Simplify right side
    495,572.80x = 303,359,537,333.76
  5. Step 5: Solve for x
    x = 303,359,537,333.76/495,572.80
  6. Step 6: Final answer
    x = 612,139.20

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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.