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Finding the Third Proportional to 299,268 and 640,044

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Solution

The third proportional to 299,268 and 640,044 is: 1,368,861.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,268 : 640,044 = 640,044 : x
  2. Step 2: Convert to fraction form
    299,268/640,044 = 640,044/x
  3. Step 3: Cross multiply
    299,268x = 640,044 × 640,044
  4. Step 4: Simplify right side
    299,268x = 409,656,321,936
  5. Step 5: Solve for x
    x = 409,656,321,936/299,268
  6. Step 6: Final answer
    x = 1,368,861.09

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.