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Finding the Third Proportional to 287,708 and 632,520

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Solution

The third proportional to 287,708 and 632,520 is: 1,390,581.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,708 : 632,520 = 632,520 : x
  2. Step 2: Convert to fraction form
    287,708/632,520 = 632,520/x
  3. Step 3: Cross multiply
    287,708x = 632,520 × 632,520
  4. Step 4: Simplify right side
    287,708x = 400,081,550,400
  5. Step 5: Solve for x
    x = 400,081,550,400/287,708
  6. Step 6: Final answer
    x = 1,390,581.95

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.