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Finding the Third Proportional to 917,379 and 1,987,848

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Solution

The third proportional to 917,379 and 1,987,848 is: 4,307,423.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,379 : 1,987,848 = 1,987,848 : x
  2. Step 2: Convert to fraction form
    917,379/1,987,848 = 1,987,848/x
  3. Step 3: Cross multiply
    917,379x = 1,987,848 × 1,987,848
  4. Step 4: Simplify right side
    917,379x = 3,951,539,671,104
  5. Step 5: Solve for x
    x = 3,951,539,671,104/917,379
  6. Step 6: Final answer
    x = 4,307,423.29

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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.