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Finding the Third Proportional to 3,989,199 and 8,818,206

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Solution

The third proportional to 3,989,199 and 8,818,206 is: 19,492,824.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989,199 : 8,818,206 = 8,818,206 : x
  2. Step 2: Convert to fraction form
    3,989,199/8,818,206 = 8,818,206/x
  3. Step 3: Cross multiply
    3,989,199x = 8,818,206 × 8,818,206
  4. Step 4: Simplify right side
    3,989,199x = 77,760,757,058,436
  5. Step 5: Solve for x
    x = 77,760,757,058,436/3,989,199
  6. Step 6: Final answer
    x = 19,492,824.76

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.