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Finding the Third Proportional to 1,355,394 and 1,987,812

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Solution

The third proportional to 1,355,394 and 1,987,812 is: 2,915,312.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355,394 : 1,987,812 = 1,987,812 : x
  2. Step 2: Convert to fraction form
    1,355,394/1,987,812 = 1,987,812/x
  3. Step 3: Cross multiply
    1,355,394x = 1,987,812 × 1,987,812
  4. Step 4: Simplify right side
    1,355,394x = 3,951,396,547,344
  5. Step 5: Solve for x
    x = 3,951,396,547,344/1,355,394
  6. Step 6: Final answer
    x = 2,915,312.11

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.