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Finding the Third Proportional to 627,645 and 1,371,921

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Solution

The third proportional to 627,645 and 1,371,921 is: 2,998,776.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,645 : 1,371,921 = 1,371,921 : x
  2. Step 2: Convert to fraction form
    627,645/1,371,921 = 1,371,921/x
  3. Step 3: Cross multiply
    627,645x = 1,371,921 × 1,371,921
  4. Step 4: Simplify right side
    627,645x = 1,882,167,230,241
  5. Step 5: Solve for x
    x = 1,882,167,230,241/627,645
  6. Step 6: Final answer
    x = 2,998,776.75

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.