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Finding the Third Proportional to 322,240 and 706,688

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Solution

The third proportional to 322,240 and 706,688 is: 1,549,801.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,240 : 706,688 = 706,688 : x
  2. Step 2: Convert to fraction form
    322,240/706,688 = 706,688/x
  3. Step 3: Cross multiply
    322,240x = 706,688 × 706,688
  4. Step 4: Simplify right side
    322,240x = 499,407,929,344
  5. Step 5: Solve for x
    x = 499,407,929,344/322,240
  6. Step 6: Final answer
    x = 1,549,801.17

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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.