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Finding the Third Proportional to 279,390 and 603,420

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Solution

The third proportional to 279,390 and 603,420 is: 1,303,252.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,390 : 603,420 = 603,420 : x
  2. Step 2: Convert to fraction form
    279,390/603,420 = 603,420/x
  3. Step 3: Cross multiply
    279,390x = 603,420 × 603,420
  4. Step 4: Simplify right side
    279,390x = 364,115,696,400
  5. Step 5: Solve for x
    x = 364,115,696,400/279,390
  6. Step 6: Final answer
    x = 1,303,252.43

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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.