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Finding the Fourth Proportional to 8,489,546.40, 12,734,319.60 and 2,810,344.80

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Solution

The fourth proportional to 8,489,546.40, 12,734,319.60 and 2,810,344.80 is: 4,215,517.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,489,546.40 : 12,734,319.60 = 2,810,344.80 : x
  2. Step 2: Convert to fraction form
    8,489,546.40/12,734,319.60 = 2,810,344.80/x
  3. Step 3: Cross multiply
    8,489,546.40x = 12,734,319.60 × 2,810,344.80
  4. Step 4: Simplify right side
    8,489,546.40x = 35,787,828,869,398.08
  5. Step 5: Solve for x
    x = 35,787,828,869,398.08/8,489,546.40
  6. Step 6: Final answer
    x = 4,215,517.20

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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.