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Finding the Third Proportional to 328,964 and 683,780

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Solution

The third proportional to 328,964 and 683,780 is: 1,421,295.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,964 : 683,780 = 683,780 : x
  2. Step 2: Convert to fraction form
    328,964/683,780 = 683,780/x
  3. Step 3: Cross multiply
    328,964x = 683,780 × 683,780
  4. Step 4: Simplify right side
    328,964x = 467,555,088,400
  5. Step 5: Solve for x
    x = 467,555,088,400/328,964
  6. Step 6: Final answer
    x = 1,421,295.61

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.