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Finding the Third Proportional to 322,378 and 692,332

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Solution

The third proportional to 322,378 and 692,332 is: 1,486,837.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,378 : 692,332 = 692,332 : x
  2. Step 2: Convert to fraction form
    322,378/692,332 = 692,332/x
  3. Step 3: Cross multiply
    322,378x = 692,332 × 692,332
  4. Step 4: Simplify right side
    322,378x = 479,323,598,224
  5. Step 5: Solve for x
    x = 479,323,598,224/322,378
  6. Step 6: Final answer
    x = 1,486,837.19

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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.