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Finding the Third Proportional to 313,236 and 682,740

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Solution

The third proportional to 313,236 and 682,740 is: 1,488,123.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,236 : 682,740 = 682,740 : x
  2. Step 2: Convert to fraction form
    313,236/682,740 = 682,740/x
  3. Step 3: Cross multiply
    313,236x = 682,740 × 682,740
  4. Step 4: Simplify right side
    313,236x = 466,133,907,600
  5. Step 5: Solve for x
    x = 466,133,907,600/313,236
  6. Step 6: Final answer
    x = 1,488,123.68

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.