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Finding the Third Proportional to 284,921 and 442,923

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Solution

The third proportional to 284,921 and 442,923 is: 688,544.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,921 : 442,923 = 442,923 : x
  2. Step 2: Convert to fraction form
    284,921/442,923 = 442,923/x
  3. Step 3: Cross multiply
    284,921x = 442,923 × 442,923
  4. Step 4: Simplify right side
    284,921x = 196,180,783,929
  5. Step 5: Solve for x
    x = 196,180,783,929/284,921
  6. Step 6: Final answer
    x = 688,544.49

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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.