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Finding the Third Proportional to 20,429,790,189 and 28,757,109,939

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Solution

The third proportional to 20,429,790,189 and 28,757,109,939 is: 40,478,701,170.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,429,790,189 : 28,757,109,939 = 28,757,109,939 : x
  2. Step 2: Convert to fraction form
    20,429,790,189/28,757,109,939 = 28,757,109,939/x
  3. Step 3: Cross multiply
    20,429,790,189x = 28,757,109,939 × 28,757,109,939
  4. Step 4: Simplify right side
    20,429,790,189x = 826,971,372,043,732,647,936
  5. Step 5: Solve for x
    x = 826,971,372,043,732,647,936/20,429,790,189
  6. Step 6: Final answer
    x = 40,478,701,170.85

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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.