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Finding the Third Proportional to 9,436,690 and 20,639,645

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Solution

The third proportional to 9,436,690 and 20,639,645 is: 45,142,411.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,436,690 : 20,639,645 = 20,639,645 : x
  2. Step 2: Convert to fraction form
    9,436,690/20,639,645 = 20,639,645/x
  3. Step 3: Cross multiply
    9,436,690x = 20,639,645 × 20,639,645
  4. Step 4: Simplify right side
    9,436,690x = 425,994,945,726,025
  5. Step 5: Solve for x
    x = 425,994,945,726,025/9,436,690
  6. Step 6: Final answer
    x = 45,142,411.77

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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.