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Finding the Third Proportional to 12,865,412 and 19,902,704

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Solution

The third proportional to 12,865,412 and 19,902,704 is: 30,789,346.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,865,412 : 19,902,704 = 19,902,704 : x
  2. Step 2: Convert to fraction form
    12,865,412/19,902,704 = 19,902,704/x
  3. Step 3: Cross multiply
    12,865,412x = 19,902,704 × 19,902,704
  4. Step 4: Simplify right side
    12,865,412x = 396,117,626,511,616
  5. Step 5: Solve for x
    x = 396,117,626,511,616/12,865,412
  6. Step 6: Final answer
    x = 30,789,346.39

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.