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Finding the Third Proportional to 3,920,170 and 8,440,928

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Solution

The third proportional to 3,920,170 and 8,440,928 is: 18,175,044.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920,170 : 8,440,928 = 8,440,928 : x
  2. Step 2: Convert to fraction form
    3,920,170/8,440,928 = 8,440,928/x
  3. Step 3: Cross multiply
    3,920,170x = 8,440,928 × 8,440,928
  4. Step 4: Simplify right side
    3,920,170x = 71,249,265,501,184
  5. Step 5: Solve for x
    x = 71,249,265,501,184/3,920,170
  6. Step 6: Final answer
    x = 18,175,044.83

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.