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Finding the Third Proportional to 640,883.25 and 996,318

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Solution

The third proportional to 640,883.25 and 996,318 is: 1,548,877.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,883.25 : 996,318 = 996,318 : x
  2. Step 2: Convert to fraction form
    640,883.25/996,318 = 996,318/x
  3. Step 3: Cross multiply
    640,883.25x = 996,318 × 996,318
  4. Step 4: Simplify right side
    640,883.25x = 992,649,557,124
  5. Step 5: Solve for x
    x = 992,649,557,124/640,883.25
  6. Step 6: Final answer
    x = 1,548,877.36

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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.