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Finding the Third Proportional to 721,629 and 1,549,872

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Solution

The third proportional to 721,629 and 1,549,872 is: 3,328,723.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,629 : 1,549,872 = 1,549,872 : x
  2. Step 2: Convert to fraction form
    721,629/1,549,872 = 1,549,872/x
  3. Step 3: Cross multiply
    721,629x = 1,549,872 × 1,549,872
  4. Step 4: Simplify right side
    721,629x = 2,402,103,216,384
  5. Step 5: Solve for x
    x = 2,402,103,216,384/721,629
  6. Step 6: Final answer
    x = 3,328,723.23

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.