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Finding the Third Proportional to 668,403 and 1,391,886

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Solution

The third proportional to 668,403 and 1,391,886 is: 2,898,470.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,403 : 1,391,886 = 1,391,886 : x
  2. Step 2: Convert to fraction form
    668,403/1,391,886 = 1,391,886/x
  3. Step 3: Cross multiply
    668,403x = 1,391,886 × 1,391,886
  4. Step 4: Simplify right side
    668,403x = 1,937,346,636,996
  5. Step 5: Solve for x
    x = 1,937,346,636,996/668,403
  6. Step 6: Final answer
    x = 2,898,470.89

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.