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Finding the Third Proportional to 293,969.25 and 643,980.38

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Solution

The third proportional to 293,969.25 and 643,980.38 is: 1,410,728.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,969.25 : 643,980.38 = 643,980.38 : x
  2. Step 2: Convert to fraction form
    293,969.25/643,980.38 = 643,980.38/x
  3. Step 3: Cross multiply
    293,969.25x = 643,980.38 × 643,980.38
  4. Step 4: Simplify right side
    293,969.25x = 414,710,723,385.14
  5. Step 5: Solve for x
    x = 414,710,723,385.14/293,969.25
  6. Step 6: Final answer
    x = 1,410,728.24

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.