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Finding the Third Proportional to 300,819 and 668,880

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Solution

The third proportional to 300,819 and 668,880 is: 1,487,274.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,819 : 668,880 = 668,880 : x
  2. Step 2: Convert to fraction form
    300,819/668,880 = 668,880/x
  3. Step 3: Cross multiply
    300,819x = 668,880 × 668,880
  4. Step 4: Simplify right side
    300,819x = 447,400,454,400
  5. Step 5: Solve for x
    x = 447,400,454,400/300,819
  6. Step 6: Final answer
    x = 1,487,274.59

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.