Home / 8,205,865.80-12,297,796.20-6,386,427.69

Finding the Fourth Proportional to 8,205,865.80, 12,297,796.20 and 6,386,427.69

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Solution

The fourth proportional to 8,205,865.80, 12,297,796.20 and 6,386,427.69 is: 9,571,078.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,205,865.80 : 12,297,796.20 = 6,386,427.69 : x
  2. Step 2: Convert to fraction form
    8,205,865.80/12,297,796.20 = 6,386,427.69/x
  3. Step 3: Cross multiply
    8,205,865.80x = 12,297,796.20 × 6,386,427.69
  4. Step 4: Simplify right side
    8,205,865.80x = 78,538,986,177,656.78
  5. Step 5: Solve for x
    x = 78,538,986,177,656.78/8,205,865.80
  6. Step 6: Final answer
    x = 9,571,078.55

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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.