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Finding the Fourth Proportional to 8,215,694.20, 12,305,826.60 and 8,215,694.20

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Solution

The fourth proportional to 8,215,694.20, 12,305,826.60 and 8,215,694.20 is: 12,305,826.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,215,694.20 : 12,305,826.60 = 8,215,694.20 : x
  2. Step 2: Convert to fraction form
    8,215,694.20/12,305,826.60 = 8,215,694.20/x
  3. Step 3: Cross multiply
    8,215,694.20x = 12,305,826.60 × 8,215,694.20
  4. Step 4: Simplify right side
    8,215,694.20x = 101,100,908,223,825.72
  5. Step 5: Solve for x
    x = 101,100,908,223,825.72/8,215,694.20
  6. Step 6: Final answer
    x = 12,305,826.60

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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.