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Finding the Third Proportional to 3,920,166 and 8,440,920

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Solution

The third proportional to 3,920,166 and 8,440,920 is: 18,175,028.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920,166 : 8,440,920 = 8,440,920 : x
  2. Step 2: Convert to fraction form
    3,920,166/8,440,920 = 8,440,920/x
  3. Step 3: Cross multiply
    3,920,166x = 8,440,920 × 8,440,920
  4. Step 4: Simplify right side
    3,920,166x = 71,249,130,446,400
  5. Step 5: Solve for x
    x = 71,249,130,446,400/3,920,166
  6. Step 6: Final answer
    x = 18,175,028.93

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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.