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Finding the Third Proportional to 8,987,478 and 19,656,402

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Solution

The third proportional to 8,987,478 and 19,656,402 is: 42,990,273.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,987,478 : 19,656,402 = 19,656,402 : x
  2. Step 2: Convert to fraction form
    8,987,478/19,656,402 = 19,656,402/x
  3. Step 3: Cross multiply
    8,987,478x = 19,656,402 × 19,656,402
  4. Step 4: Simplify right side
    8,987,478x = 386,374,139,585,604
  5. Step 5: Solve for x
    x = 386,374,139,585,604/8,987,478
  6. Step 6: Final answer
    x = 42,990,273.75

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.