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Finding the Third Proportional to 5,639,477 and 11,921,851

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Solution

The third proportional to 5,639,477 and 11,921,851 is: 25,202,785.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,639,477 : 11,921,851 = 11,921,851 : x
  2. Step 2: Convert to fraction form
    5,639,477/11,921,851 = 11,921,851/x
  3. Step 3: Cross multiply
    5,639,477x = 11,921,851 × 11,921,851
  4. Step 4: Simplify right side
    5,639,477x = 142,130,531,266,201
  5. Step 5: Solve for x
    x = 142,130,531,266,201/5,639,477
  6. Step 6: Final answer
    x = 25,202,785.87

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.