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Finding the Third Proportional to 1,861,398,879 and 3,988,350,354

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Solution

The third proportional to 1,861,398,879 and 3,988,350,354 is: 8,545,690,408.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861,398,879 : 3,988,350,354 = 3,988,350,354 : x
  2. Step 2: Convert to fraction form
    1,861,398,879/3,988,350,354 = 3,988,350,354/x
  3. Step 3: Cross multiply
    1,861,398,879x = 3,988,350,354 × 3,988,350,354
  4. Step 4: Simplify right side
    1,861,398,879x = 15,906,938,546,251,925,504
  5. Step 5: Solve for x
    x = 15,906,938,546,251,925,504/1,861,398,879
  6. Step 6: Final answer
    x = 8,545,690,408.28

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.