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Finding the Third Proportional to 408,076 and 633,402

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Solution

The third proportional to 408,076 and 633,402 is: 983,145.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,076 : 633,402 = 633,402 : x
  2. Step 2: Convert to fraction form
    408,076/633,402 = 633,402/x
  3. Step 3: Cross multiply
    408,076x = 633,402 × 633,402
  4. Step 4: Simplify right side
    408,076x = 401,198,093,604
  5. Step 5: Solve for x
    x = 401,198,093,604/408,076
  6. Step 6: Final answer
    x = 983,145.53

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.