Home / 8,120,793.60-12,183,814.80-5,428,159.20

Finding the Fourth Proportional to 8,120,793.60, 12,183,814.80 and 5,428,159.20

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Solution

The fourth proportional to 8,120,793.60, 12,183,814.80 and 5,428,159.20 is: 8,143,993.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,120,793.60 : 12,183,814.80 = 5,428,159.20 : x
  2. Step 2: Convert to fraction form
    8,120,793.60/12,183,814.80 = 5,428,159.20/x
  3. Step 3: Cross multiply
    8,120,793.60x = 12,183,814.80 × 5,428,159.20
  4. Step 4: Simplify right side
    8,120,793.60x = 66,135,686,397,716.16
  5. Step 5: Solve for x
    x = 66,135,686,397,716.16/8,120,793.60
  6. Step 6: Final answer
    x = 8,143,993.02

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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.