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Finding the Fourth Proportional to 6,321,339.07, 8,723,470.89 and 3,420,729.61

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Solution

The fourth proportional to 6,321,339.07, 8,723,470.89 and 3,420,729.61 is: 4,720,619.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,321,339.07 : 8,723,470.89 = 3,420,729.61 : x
  2. Step 2: Convert to fraction form
    6,321,339.07/8,723,470.89 = 3,420,729.61/x
  3. Step 3: Cross multiply
    6,321,339.07x = 8,723,470.89 × 3,420,729.61
  4. Step 4: Simplify right side
    6,321,339.07x = 29,840,635,175,396.05
  5. Step 5: Solve for x
    x = 29,840,635,175,396.05/6,321,339.07
  6. Step 6: Final answer
    x = 4,720,619.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.