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Finding the Fourth Proportional to 8,916,471.20, 13,374,706.80 and 3,236,880.80

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Solution

The fourth proportional to 8,916,471.20, 13,374,706.80 and 3,236,880.80 is: 4,855,321.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,916,471.20 : 13,374,706.80 = 3,236,880.80 : x
  2. Step 2: Convert to fraction form
    8,916,471.20/13,374,706.80 = 3,236,880.80/x
  3. Step 3: Cross multiply
    8,916,471.20x = 13,374,706.80 × 3,236,880.80
  4. Step 4: Simplify right side
    8,916,471.20x = 43,292,331,646,549.44
  5. Step 5: Solve for x
    x = 43,292,331,646,549.44/8,916,471.20
  6. Step 6: Final answer
    x = 4,855,321.20

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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.