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Finding the Third Proportional to 873,638 and 1,868,722

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Solution

The third proportional to 873,638 and 1,868,722 is: 3,997,218.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,638 : 1,868,722 = 1,868,722 : x
  2. Step 2: Convert to fraction form
    873,638/1,868,722 = 1,868,722/x
  3. Step 3: Cross multiply
    873,638x = 1,868,722 × 1,868,722
  4. Step 4: Simplify right side
    873,638x = 3,492,121,913,284
  5. Step 5: Solve for x
    x = 3,492,121,913,284/873,638
  6. Step 6: Final answer
    x = 3,997,218.43

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.