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Finding the Third Proportional to 284,909 and 442,904

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Solution

The third proportional to 284,909 and 442,904 is: 688,514.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,909 : 442,904 = 442,904 : x
  2. Step 2: Convert to fraction form
    284,909/442,904 = 442,904/x
  3. Step 3: Cross multiply
    284,909x = 442,904 × 442,904
  4. Step 4: Simplify right side
    284,909x = 196,163,953,216
  5. Step 5: Solve for x
    x = 196,163,953,216/284,909
  6. Step 6: Final answer
    x = 688,514.41

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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.