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Finding the Third Proportional to 443,050 and 687,309

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Solution

The third proportional to 443,050 and 687,309 is: 1,066,231.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,050 : 687,309 = 687,309 : x
  2. Step 2: Convert to fraction form
    443,050/687,309 = 687,309/x
  3. Step 3: Cross multiply
    443,050x = 687,309 × 687,309
  4. Step 4: Simplify right side
    443,050x = 472,393,661,481
  5. Step 5: Solve for x
    x = 472,393,661,481/443,050
  6. Step 6: Final answer
    x = 1,066,231.04

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.