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Finding the Third Proportional to 1,221,867 and 1,890,045

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Solution

The third proportional to 1,221,867 and 1,890,045 is: 2,923,616.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,867 : 1,890,045 = 1,890,045 : x
  2. Step 2: Convert to fraction form
    1,221,867/1,890,045 = 1,890,045/x
  3. Step 3: Cross multiply
    1,221,867x = 1,890,045 × 1,890,045
  4. Step 4: Simplify right side
    1,221,867x = 3,572,270,102,025
  5. Step 5: Solve for x
    x = 3,572,270,102,025/1,221,867
  6. Step 6: Final answer
    x = 2,923,616.16

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.