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Finding the Third Proportional to 640,158 and 1,379,556

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Solution

The third proportional to 640,158 and 1,379,556 is: 2,972,976.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,158 : 1,379,556 = 1,379,556 : x
  2. Step 2: Convert to fraction form
    640,158/1,379,556 = 1,379,556/x
  3. Step 3: Cross multiply
    640,158x = 1,379,556 × 1,379,556
  4. Step 4: Simplify right side
    640,158x = 1,903,174,757,136
  5. Step 5: Solve for x
    x = 1,903,174,757,136/640,158
  6. Step 6: Final answer
    x = 2,972,976.60

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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.