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Finding the Third Proportional to 380,786 and 827,120

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Solution

The third proportional to 380,786 and 827,120 is: 1,796,619.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,786 : 827,120 = 827,120 : x
  2. Step 2: Convert to fraction form
    380,786/827,120 = 827,120/x
  3. Step 3: Cross multiply
    380,786x = 827,120 × 827,120
  4. Step 4: Simplify right side
    380,786x = 684,127,494,400
  5. Step 5: Solve for x
    x = 684,127,494,400/380,786
  6. Step 6: Final answer
    x = 1,796,619.35

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.