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Finding the Third Proportional to 4,991,400 and 10,219,372

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Solution

The third proportional to 4,991,400 and 10,219,372 is: 20,923,100.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,991,400 : 10,219,372 = 10,219,372 : x
  2. Step 2: Convert to fraction form
    4,991,400/10,219,372 = 10,219,372/x
  3. Step 3: Cross multiply
    4,991,400x = 10,219,372 × 10,219,372
  4. Step 4: Simplify right side
    4,991,400x = 104,435,564,074,384
  5. Step 5: Solve for x
    x = 104,435,564,074,384/4,991,400
  6. Step 6: Final answer
    x = 20,923,100.55

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.