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Finding the Fourth Proportional to 7,884,817.80, 11,826,351.90 and 2,205,616.20

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Solution

The fourth proportional to 7,884,817.80, 11,826,351.90 and 2,205,616.20 is: 3,308,179.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,884,817.80 : 11,826,351.90 = 2,205,616.20 : x
  2. Step 2: Convert to fraction form
    7,884,817.80/11,826,351.90 = 2,205,616.20/x
  3. Step 3: Cross multiply
    7,884,817.80x = 11,826,351.90 × 2,205,616.20
  4. Step 4: Simplify right side
    7,884,817.80x = 26,084,393,337,540.78
  5. Step 5: Solve for x
    x = 26,084,393,337,540.78/7,884,817.80
  6. Step 6: Final answer
    x = 3,308,179.59

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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.