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Finding the Third Proportional to 691,880 and 1,519,972

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Solution

The third proportional to 691,880 and 1,519,972 is: 3,339,184.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,880 : 1,519,972 = 1,519,972 : x
  2. Step 2: Convert to fraction form
    691,880/1,519,972 = 1,519,972/x
  3. Step 3: Cross multiply
    691,880x = 1,519,972 × 1,519,972
  4. Step 4: Simplify right side
    691,880x = 2,310,314,880,784
  5. Step 5: Solve for x
    x = 2,310,314,880,784/691,880
  6. Step 6: Final answer
    x = 3,339,184.37

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.