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Finding the Third Proportional to 1,818,916.50 and 3,960,757.50

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Solution

The third proportional to 1,818,916.50 and 3,960,757.50 is: 8,624,694.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,818,916.50 : 3,960,757.50 = 3,960,757.50 : x
  2. Step 2: Convert to fraction form
    1,818,916.50/3,960,757.50 = 3,960,757.50/x
  3. Step 3: Cross multiply
    1,818,916.50x = 3,960,757.50 × 3,960,757.50
  4. Step 4: Simplify right side
    1,818,916.50x = 15,687,599,973,806.25
  5. Step 5: Solve for x
    x = 15,687,599,973,806.25/1,818,916.50
  6. Step 6: Final answer
    x = 8,624,694.96

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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.