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Finding the Third Proportional to 289,224 and 625,239

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Solution

The third proportional to 289,224 and 625,239 is: 1,351,629.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,224 : 625,239 = 625,239 : x
  2. Step 2: Convert to fraction form
    289,224/625,239 = 625,239/x
  3. Step 3: Cross multiply
    289,224x = 625,239 × 625,239
  4. Step 4: Simplify right side
    289,224x = 390,923,807,121
  5. Step 5: Solve for x
    x = 390,923,807,121/289,224
  6. Step 6: Final answer
    x = 1,351,629.90

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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.