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Finding the Third Proportional to 296,160 and 639,603

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Solution

The third proportional to 296,160 and 639,603 is: 1,381,320.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,160 : 639,603 = 639,603 : x
  2. Step 2: Convert to fraction form
    296,160/639,603 = 639,603/x
  3. Step 3: Cross multiply
    296,160x = 639,603 × 639,603
  4. Step 4: Simplify right side
    296,160x = 409,091,997,609
  5. Step 5: Solve for x
    x = 409,091,997,609/296,160
  6. Step 6: Final answer
    x = 1,381,320.90

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.