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Finding the Third Proportional to 8,472,678 and 12,930,711

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Solution

The third proportional to 8,472,678 and 12,930,711 is: 19,734,408.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,472,678 : 12,930,711 = 12,930,711 : x
  2. Step 2: Convert to fraction form
    8,472,678/12,930,711 = 12,930,711/x
  3. Step 3: Cross multiply
    8,472,678x = 12,930,711 × 12,930,711
  4. Step 4: Simplify right side
    8,472,678x = 167,203,286,965,521
  5. Step 5: Solve for x
    x = 167,203,286,965,521/8,472,678
  6. Step 6: Final answer
    x = 19,734,408.29

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.