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Finding the Third Proportional to 287,021.25 and 625,709.25

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Solution

The third proportional to 287,021.25 and 625,709.25 is: 1,364,052.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,021.25 : 625,709.25 = 625,709.25 : x
  2. Step 2: Convert to fraction form
    287,021.25/625,709.25 = 625,709.25/x
  3. Step 3: Cross multiply
    287,021.25x = 625,709.25 × 625,709.25
  4. Step 4: Simplify right side
    287,021.25x = 391,512,065,535.56
  5. Step 5: Solve for x
    x = 391,512,065,535.56/287,021.25
  6. Step 6: Final answer
    x = 1,364,052.54

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.