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Finding the Third Proportional to 627,140 and 1,379,136

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Solution

The third proportional to 627,140 and 1,379,136 is: 3,032,841.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,140 : 1,379,136 = 1,379,136 : x
  2. Step 2: Convert to fraction form
    627,140/1,379,136 = 1,379,136/x
  3. Step 3: Cross multiply
    627,140x = 1,379,136 × 1,379,136
  4. Step 4: Simplify right side
    627,140x = 1,902,016,106,496
  5. Step 5: Solve for x
    x = 1,902,016,106,496/627,140
  6. Step 6: Final answer
    x = 3,032,841.32

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.