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Finding the Third Proportional to 890,692 and 1,379,430

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Solution

The third proportional to 890,692 and 1,379,430 is: 2,136,346.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,692 : 1,379,430 = 1,379,430 : x
  2. Step 2: Convert to fraction form
    890,692/1,379,430 = 1,379,430/x
  3. Step 3: Cross multiply
    890,692x = 1,379,430 × 1,379,430
  4. Step 4: Simplify right side
    890,692x = 1,902,827,124,900
  5. Step 5: Solve for x
    x = 1,902,827,124,900/890,692
  6. Step 6: Final answer
    x = 2,136,346.94

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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.