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Finding the Third Proportional to 376,403,156 and 815,339,128

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Solution

The third proportional to 376,403,156 and 815,339,128 is: 1,766,132,624.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,403,156 : 815,339,128 = 815,339,128 : x
  2. Step 2: Convert to fraction form
    376,403,156/815,339,128 = 815,339,128/x
  3. Step 3: Cross multiply
    376,403,156x = 815,339,128 × 815,339,128
  4. Step 4: Simplify right side
    376,403,156x = 664,777,893,647,800,320
  5. Step 5: Solve for x
    x = 664,777,893,647,800,320/376,403,156
  6. Step 6: Final answer
    x = 1,766,132,624.16

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.