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Finding the Third Proportional to 306,786 and 669,354

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Solution

The third proportional to 306,786 and 669,354 is: 1,460,414.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,786 : 669,354 = 669,354 : x
  2. Step 2: Convert to fraction form
    306,786/669,354 = 669,354/x
  3. Step 3: Cross multiply
    306,786x = 669,354 × 669,354
  4. Step 4: Simplify right side
    306,786x = 448,034,777,316
  5. Step 5: Solve for x
    x = 448,034,777,316/306,786
  6. Step 6: Final answer
    x = 1,460,414.68

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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.