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Finding the Fourth Proportional to 8,797,963.80, 13,196,945.70 and 8,656,246.20

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Solution

The fourth proportional to 8,797,963.80, 13,196,945.70 and 8,656,246.20 is: 12,984,369.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,797,963.80 : 13,196,945.70 = 8,656,246.20 : x
  2. Step 2: Convert to fraction form
    8,797,963.80/13,196,945.70 = 8,656,246.20/x
  3. Step 3: Cross multiply
    8,797,963.80x = 13,196,945.70 × 8,656,246.20
  4. Step 4: Simplify right side
    8,797,963.80x = 114,236,011,067,231.33
  5. Step 5: Solve for x
    x = 114,236,011,067,231.33/8,797,963.80
  6. Step 6: Final answer
    x = 12,984,369.30

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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.