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Finding the Third Proportional to 551,407 and 843,330

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Solution

The third proportional to 551,407 and 843,330 is: 1,289,801.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,407 : 843,330 = 843,330 : x
  2. Step 2: Convert to fraction form
    551,407/843,330 = 843,330/x
  3. Step 3: Cross multiply
    551,407x = 843,330 × 843,330
  4. Step 4: Simplify right side
    551,407x = 711,205,488,900
  5. Step 5: Solve for x
    x = 711,205,488,900/551,407
  6. Step 6: Final answer
    x = 1,289,801.34

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.