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Finding the Fourth Proportional to 408,773.68, 616,999.78 and 408,773.68

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Solution

The fourth proportional to 408,773.68, 616,999.78 and 408,773.68 is: 616,999.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,773.68 : 616,999.78 = 408,773.68 : x
  2. Step 2: Convert to fraction form
    408,773.68/616,999.78 = 408,773.68/x
  3. Step 3: Cross multiply
    408,773.68x = 616,999.78 × 408,773.68
  4. Step 4: Simplify right side
    408,773.68x = 252,213,270,629.79
  5. Step 5: Solve for x
    x = 252,213,270,629.79/408,773.68
  6. Step 6: Final answer
    x = 616,999.78

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.