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Finding the Third Proportional to 268,636 and 579,240

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Solution

The third proportional to 268,636 and 579,240 is: 1,248,972.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,636 : 579,240 = 579,240 : x
  2. Step 2: Convert to fraction form
    268,636/579,240 = 579,240/x
  3. Step 3: Cross multiply
    268,636x = 579,240 × 579,240
  4. Step 4: Simplify right side
    268,636x = 335,518,977,600
  5. Step 5: Solve for x
    x = 335,518,977,600/268,636
  6. Step 6: Final answer
    x = 1,248,972.50

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.