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Finding the Third Proportional to 999,904 and 2,199,920

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Solution

The third proportional to 999,904 and 2,199,920 is: 4,840,112.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,904 : 2,199,920 = 2,199,920 : x
  2. Step 2: Convert to fraction form
    999,904/2,199,920 = 2,199,920/x
  3. Step 3: Cross multiply
    999,904x = 2,199,920 × 2,199,920
  4. Step 4: Simplify right side
    999,904x = 4,839,648,006,400
  5. Step 5: Solve for x
    x = 4,839,648,006,400/999,904
  6. Step 6: Final answer
    x = 4,840,112.66

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.