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Finding the Third Proportional to 15,425,269,420 and 21,722,178,449

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Solution

The third proportional to 15,425,269,420 and 21,722,178,449 is: 30,589,613,945.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,425,269,420 : 21,722,178,449 = 21,722,178,449 : x
  2. Step 2: Convert to fraction form
    15,425,269,420/21,722,178,449 = 21,722,178,449/x
  3. Step 3: Cross multiply
    15,425,269,420x = 21,722,178,449 × 21,722,178,449
  4. Step 4: Simplify right side
    15,425,269,420x = 471,853,036,570,200,047,616
  5. Step 5: Solve for x
    x = 471,853,036,570,200,047,616/15,425,269,420
  6. Step 6: Final answer
    x = 30,589,613,945.96

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.