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Finding the Third Proportional to 621,872 and 1,318,476

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Solution

The third proportional to 621,872 and 1,318,476 is: 2,795,396.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,872 : 1,318,476 = 1,318,476 : x
  2. Step 2: Convert to fraction form
    621,872/1,318,476 = 1,318,476/x
  3. Step 3: Cross multiply
    621,872x = 1,318,476 × 1,318,476
  4. Step 4: Simplify right side
    621,872x = 1,738,378,962,576
  5. Step 5: Solve for x
    x = 1,738,378,962,576/621,872
  6. Step 6: Final answer
    x = 2,795,396.74

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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.