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Finding the Third Proportional to 292,740 and 629,864

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Solution

The third proportional to 292,740 and 629,864 is: 1,355,225.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,740 : 629,864 = 629,864 : x
  2. Step 2: Convert to fraction form
    292,740/629,864 = 629,864/x
  3. Step 3: Cross multiply
    292,740x = 629,864 × 629,864
  4. Step 4: Simplify right side
    292,740x = 396,728,658,496
  5. Step 5: Solve for x
    x = 396,728,658,496/292,740
  6. Step 6: Final answer
    x = 1,355,225.31

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.