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Finding the Fourth Proportional to 2,662,906.80, 3,994,489.80 and 743,815.92

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Solution

The fourth proportional to 2,662,906.80, 3,994,489.80 and 743,815.92 is: 1,115,760.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,662,906.80 : 3,994,489.80 = 743,815.92 : x
  2. Step 2: Convert to fraction form
    2,662,906.80/3,994,489.80 = 743,815.92/x
  3. Step 3: Cross multiply
    2,662,906.80x = 3,994,489.80 × 743,815.92
  4. Step 4: Simplify right side
    2,662,906.80x = 2,971,165,105,517.62
  5. Step 5: Solve for x
    x = 2,971,165,105,517.62/2,662,906.80
  6. Step 6: Final answer
    x = 1,115,760.08

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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.