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Finding the Fourth Proportional to 8,339,909.04, 12,486,273.12 and 5,299,739.28

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Solution

The fourth proportional to 8,339,909.04, 12,486,273.12 and 5,299,739.28 is: 7,934,617.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,339,909.04 : 12,486,273.12 = 5,299,739.28 : x
  2. Step 2: Convert to fraction form
    8,339,909.04/12,486,273.12 = 5,299,739.28/x
  3. Step 3: Cross multiply
    8,339,909.04x = 12,486,273.12 × 5,299,739.28
  4. Step 4: Simplify right side
    8,339,909.04x = 66,173,992,114,872.16
  5. Step 5: Solve for x
    x = 66,173,992,114,872.16/8,339,909.04
  6. Step 6: Final answer
    x = 7,934,617.97

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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.