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Finding the Third Proportional to 643,372 and 1,375,080

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Solution

The third proportional to 643,372 and 1,375,080 is: 2,938,960.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,372 : 1,375,080 = 1,375,080 : x
  2. Step 2: Convert to fraction form
    643,372/1,375,080 = 1,375,080/x
  3. Step 3: Cross multiply
    643,372x = 1,375,080 × 1,375,080
  4. Step 4: Simplify right side
    643,372x = 1,890,845,006,400
  5. Step 5: Solve for x
    x = 1,890,845,006,400/643,372
  6. Step 6: Final answer
    x = 2,938,960.67

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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.