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Finding the Fourth Proportional to 8,800,787.40, 13,203,513.90 and 3,120,419.40

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Solution

The fourth proportional to 8,800,787.40, 13,203,513.90 and 3,120,419.40 is: 4,681,456.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,800,787.40 : 13,203,513.90 = 3,120,419.40 : x
  2. Step 2: Convert to fraction form
    8,800,787.40/13,203,513.90 = 3,120,419.40/x
  3. Step 3: Cross multiply
    8,800,787.40x = 13,203,513.90 × 3,120,419.40
  4. Step 4: Simplify right side
    8,800,787.40x = 41,200,500,921,729.66
  5. Step 5: Solve for x
    x = 41,200,500,921,729.66/8,800,787.40
  6. Step 6: Final answer
    x = 4,681,456.22

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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.