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Finding the Fourth Proportional to 8,682,711, 11,982,141.18 and 4,815,824.28

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Solution

The fourth proportional to 8,682,711, 11,982,141.18 and 4,815,824.28 is: 6,645,837.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,682,711 : 11,982,141.18 = 4,815,824.28 : x
  2. Step 2: Convert to fraction form
    8,682,711/11,982,141.18 = 4,815,824.28/x
  3. Step 3: Cross multiply
    8,682,711x = 11,982,141.18 × 4,815,824.28
  4. Step 4: Simplify right side
    8,682,711x = 57,703,886,421,031.85
  5. Step 5: Solve for x
    x = 57,703,886,421,031.85/8,682,711
  6. Step 6: Final answer
    x = 6,645,837.51

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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.