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Finding the Third Proportional to 639,552 and 1,385,088

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Solution

The third proportional to 639,552 and 1,385,088 is: 2,999,707.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,552 : 1,385,088 = 1,385,088 : x
  2. Step 2: Convert to fraction form
    639,552/1,385,088 = 1,385,088/x
  3. Step 3: Cross multiply
    639,552x = 1,385,088 × 1,385,088
  4. Step 4: Simplify right side
    639,552x = 1,918,468,767,744
  5. Step 5: Solve for x
    x = 1,918,468,767,744/639,552
  6. Step 6: Final answer
    x = 2,999,707.24

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.