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Finding the Third Proportional to 656,871 and 1,421,703

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Solution

The third proportional to 656,871 and 1,421,703 is: 3,077,072.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,871 : 1,421,703 = 1,421,703 : x
  2. Step 2: Convert to fraction form
    656,871/1,421,703 = 1,421,703/x
  3. Step 3: Cross multiply
    656,871x = 1,421,703 × 1,421,703
  4. Step 4: Simplify right side
    656,871x = 2,021,239,420,209
  5. Step 5: Solve for x
    x = 2,021,239,420,209/656,871
  6. Step 6: Final answer
    x = 3,077,072.09

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.