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Finding the Third Proportional to 431,606.25 and 653,400.38

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Solution

The third proportional to 431,606.25 and 653,400.38 is: 989,170.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,606.25 : 653,400.38 = 653,400.38 : x
  2. Step 2: Convert to fraction form
    431,606.25/653,400.38 = 653,400.38/x
  3. Step 3: Cross multiply
    431,606.25x = 653,400.38 × 653,400.38
  4. Step 4: Simplify right side
    431,606.25x = 426,932,050,050.14
  5. Step 5: Solve for x
    x = 426,932,050,050.14/431,606.25
  6. Step 6: Final answer
    x = 989,170.22

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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.