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Finding the Third Proportional to 4,991,160 and 10,218,759

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Solution

The third proportional to 4,991,160 and 10,218,759 is: 20,921,596.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,991,160 : 10,218,759 = 10,218,759 : x
  2. Step 2: Convert to fraction form
    4,991,160/10,218,759 = 10,218,759/x
  3. Step 3: Cross multiply
    4,991,160x = 10,218,759 × 10,218,759
  4. Step 4: Simplify right side
    4,991,160x = 104,423,035,500,081
  5. Step 5: Solve for x
    x = 104,423,035,500,081/4,991,160
  6. Step 6: Final answer
    x = 20,921,596.48

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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.