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Finding the Third Proportional to 285,780 and 622,354

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Solution

The third proportional to 285,780 and 622,354 is: 1,355,324.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,780 : 622,354 = 622,354 : x
  2. Step 2: Convert to fraction form
    285,780/622,354 = 622,354/x
  3. Step 3: Cross multiply
    285,780x = 622,354 × 622,354
  4. Step 4: Simplify right side
    285,780x = 387,324,501,316
  5. Step 5: Solve for x
    x = 387,324,501,316/285,780
  6. Step 6: Final answer
    x = 1,355,324.03

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.