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Finding the Third Proportional to 289,484 and 440,010

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Solution

The third proportional to 289,484 and 440,010 is: 668,806.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,484 : 440,010 = 440,010 : x
  2. Step 2: Convert to fraction form
    289,484/440,010 = 440,010/x
  3. Step 3: Cross multiply
    289,484x = 440,010 × 440,010
  4. Step 4: Simplify right side
    289,484x = 193,608,800,100
  5. Step 5: Solve for x
    x = 193,608,800,100/289,484
  6. Step 6: Final answer
    x = 668,806.57

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.