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Finding the Third Proportional to 639,964 and 1,374,902

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Solution

The third proportional to 639,964 and 1,374,902 is: 2,953,846.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,964 : 1,374,902 = 1,374,902 : x
  2. Step 2: Convert to fraction form
    639,964/1,374,902 = 1,374,902/x
  3. Step 3: Cross multiply
    639,964x = 1,374,902 × 1,374,902
  4. Step 4: Simplify right side
    639,964x = 1,890,355,509,604
  5. Step 5: Solve for x
    x = 1,890,355,509,604/639,964
  6. Step 6: Final answer
    x = 2,953,846.64

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.