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Finding the Third Proportional to 431,349 and 653,069

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Solution

The third proportional to 431,349 and 653,069 is: 988,756.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,349 : 653,069 = 653,069 : x
  2. Step 2: Convert to fraction form
    431,349/653,069 = 653,069/x
  3. Step 3: Cross multiply
    431,349x = 653,069 × 653,069
  4. Step 4: Simplify right side
    431,349x = 426,499,118,761
  5. Step 5: Solve for x
    x = 426,499,118,761/431,349
  6. Step 6: Final answer
    x = 988,756.48

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.