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Finding the Third Proportional to 8,578,920 and 12,605,694

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Solution

The third proportional to 8,578,920 and 12,605,694 is: 18,522,555.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,578,920 : 12,605,694 = 12,605,694 : x
  2. Step 2: Convert to fraction form
    8,578,920/12,605,694 = 12,605,694/x
  3. Step 3: Cross multiply
    8,578,920x = 12,605,694 × 12,605,694
  4. Step 4: Simplify right side
    8,578,920x = 158,903,521,221,636
  5. Step 5: Solve for x
    x = 158,903,521,221,636/8,578,920
  6. Step 6: Final answer
    x = 18,522,555.43

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.