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Finding the Third Proportional to 3,988,084 and 8,697,987

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Solution

The third proportional to 3,988,084 and 8,697,987 is: 18,970,256.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988,084 : 8,697,987 = 8,697,987 : x
  2. Step 2: Convert to fraction form
    3,988,084/8,697,987 = 8,697,987/x
  3. Step 3: Cross multiply
    3,988,084x = 8,697,987 × 8,697,987
  4. Step 4: Simplify right side
    3,988,084x = 75,654,977,852,169
  5. Step 5: Solve for x
    x = 75,654,977,852,169/3,988,084
  6. Step 6: Final answer
    x = 18,970,256.86

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.