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Finding the Third Proportional to 2,989,780 and 6,378,187

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Solution

The third proportional to 2,989,780 and 6,378,187 is: 13,606,776.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989,780 : 6,378,187 = 6,378,187 : x
  2. Step 2: Convert to fraction form
    2,989,780/6,378,187 = 6,378,187/x
  3. Step 3: Cross multiply
    2,989,780x = 6,378,187 × 6,378,187
  4. Step 4: Simplify right side
    2,989,780x = 40,681,269,406,969
  5. Step 5: Solve for x
    x = 40,681,269,406,969/2,989,780
  6. Step 6: Final answer
    x = 13,606,776.89

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.