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Finding the Third Proportional to 620,676 and 1,329,939

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Solution

The third proportional to 620,676 and 1,329,939 is: 2,849,695.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,676 : 1,329,939 = 1,329,939 : x
  2. Step 2: Convert to fraction form
    620,676/1,329,939 = 1,329,939/x
  3. Step 3: Cross multiply
    620,676x = 1,329,939 × 1,329,939
  4. Step 4: Simplify right side
    620,676x = 1,768,737,743,721
  5. Step 5: Solve for x
    x = 1,768,737,743,721/620,676
  6. Step 6: Final answer
    x = 2,849,695.72

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.