Home / 8,691,172.20-13,036,758.30-5,478,906.60

Finding the Fourth Proportional to 8,691,172.20, 13,036,758.30 and 5,478,906.60

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Solution

The fourth proportional to 8,691,172.20, 13,036,758.30 and 5,478,906.60 is: 8,218,359.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,691,172.20 : 13,036,758.30 = 5,478,906.60 : x
  2. Step 2: Convert to fraction form
    8,691,172.20/13,036,758.30 = 5,478,906.60/x
  3. Step 3: Cross multiply
    8,691,172.20x = 13,036,758.30 × 5,478,906.60
  4. Step 4: Simplify right side
    8,691,172.20x = 71,427,181,092,474.78
  5. Step 5: Solve for x
    x = 71,427,181,092,474.78/8,691,172.20
  6. Step 6: Final answer
    x = 8,218,359.90

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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.