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Finding the Third Proportional to 287,975.25 and 628,357.50

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Solution

The third proportional to 287,975.25 and 628,357.50 is: 1,371,066.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,975.25 : 628,357.50 = 628,357.50 : x
  2. Step 2: Convert to fraction form
    287,975.25/628,357.50 = 628,357.50/x
  3. Step 3: Cross multiply
    287,975.25x = 628,357.50 × 628,357.50
  4. Step 4: Simplify right side
    287,975.25x = 394,833,147,806.25
  5. Step 5: Solve for x
    x = 394,833,147,806.25/287,975.25
  6. Step 6: Final answer
    x = 1,371,066.26

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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.