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Finding the Third Proportional to 890,678 and 1,379,703

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Solution

The third proportional to 890,678 and 1,379,703 is: 2,137,226.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,678 : 1,379,703 = 1,379,703 : x
  2. Step 2: Convert to fraction form
    890,678/1,379,703 = 1,379,703/x
  3. Step 3: Cross multiply
    890,678x = 1,379,703 × 1,379,703
  4. Step 4: Simplify right side
    890,678x = 1,903,580,368,209
  5. Step 5: Solve for x
    x = 1,903,580,368,209/890,678
  6. Step 6: Final answer
    x = 2,137,226.21

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.