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Finding the Third Proportional to 769,416 and 1,680,432

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Solution

The third proportional to 769,416 and 1,680,432 is: 3,670,123.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,416 : 1,680,432 = 1,680,432 : x
  2. Step 2: Convert to fraction form
    769,416/1,680,432 = 1,680,432/x
  3. Step 3: Cross multiply
    769,416x = 1,680,432 × 1,680,432
  4. Step 4: Simplify right side
    769,416x = 2,823,851,706,624
  5. Step 5: Solve for x
    x = 2,823,851,706,624/769,416
  6. Step 6: Final answer
    x = 3,670,123.45

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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.