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Finding the Third Proportional to 619,389 and 1,313,137

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Solution

The third proportional to 619,389 and 1,313,137 is: 2,783,918.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,389 : 1,313,137 = 1,313,137 : x
  2. Step 2: Convert to fraction form
    619,389/1,313,137 = 1,313,137/x
  3. Step 3: Cross multiply
    619,389x = 1,313,137 × 1,313,137
  4. Step 4: Simplify right side
    619,389x = 1,724,328,780,769
  5. Step 5: Solve for x
    x = 1,724,328,780,769/619,389
  6. Step 6: Final answer
    x = 2,783,918.96

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.