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Finding the Third Proportional to 287,955 and 628,317

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Solution

The third proportional to 287,955 and 628,317 is: 1,370,985.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,955 : 628,317 = 628,317 : x
  2. Step 2: Convert to fraction form
    287,955/628,317 = 628,317/x
  3. Step 3: Cross multiply
    287,955x = 628,317 × 628,317
  4. Step 4: Simplify right side
    287,955x = 394,782,252,489
  5. Step 5: Solve for x
    x = 394,782,252,489/287,955
  6. Step 6: Final answer
    x = 1,370,985.93

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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.