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Finding the Third Proportional to 284,930 and 439,731

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Solution

The third proportional to 284,930 and 439,731 is: 678,634.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,930 : 439,731 = 439,731 : x
  2. Step 2: Convert to fraction form
    284,930/439,731 = 439,731/x
  3. Step 3: Cross multiply
    284,930x = 439,731 × 439,731
  4. Step 4: Simplify right side
    284,930x = 193,363,352,361
  5. Step 5: Solve for x
    x = 193,363,352,361/284,930
  6. Step 6: Final answer
    x = 678,634.59

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.