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Finding the Third Proportional to 1,390,214.25 and 2,149,162.88

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Solution

The third proportional to 1,390,214.25 and 2,149,162.88 is: 3,322,438.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,214.25 : 2,149,162.88 = 2,149,162.88 : x
  2. Step 2: Convert to fraction form
    1,390,214.25/2,149,162.88 = 2,149,162.88/x
  3. Step 3: Cross multiply
    1,390,214.25x = 2,149,162.88 × 2,149,162.88
  4. Step 4: Simplify right side
    1,390,214.25x = 4,618,901,063,278.27
  5. Step 5: Solve for x
    x = 4,618,901,063,278.27/1,390,214.25
  6. Step 6: Final answer
    x = 3,322,438.30

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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.