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Finding the Fourth Proportional to 495,545.80, 743,318.70 and 408,065.80

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Solution

The fourth proportional to 495,545.80, 743,318.70 and 408,065.80 is: 612,098.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,545.80 : 743,318.70 = 408,065.80 : x
  2. Step 2: Convert to fraction form
    495,545.80/743,318.70 = 408,065.80/x
  3. Step 3: Cross multiply
    495,545.80x = 743,318.70 × 408,065.80
  4. Step 4: Simplify right side
    495,545.80x = 303,322,939,970.46
  5. Step 5: Solve for x
    x = 303,322,939,970.46/495,545.80
  6. Step 6: Final answer
    x = 612,098.70

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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.