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Finding the Third Proportional to 293,386 and 643,796

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Solution

The third proportional to 293,386 and 643,796 is: 1,412,723.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,386 : 643,796 = 643,796 : x
  2. Step 2: Convert to fraction form
    293,386/643,796 = 643,796/x
  3. Step 3: Cross multiply
    293,386x = 643,796 × 643,796
  4. Step 4: Simplify right side
    293,386x = 414,473,289,616
  5. Step 5: Solve for x
    x = 414,473,289,616/293,386
  6. Step 6: Final answer
    x = 1,412,723.48

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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.