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Finding the Third Proportional to 285,944 and 420,588

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Solution

The third proportional to 285,944 and 420,588 is: 618,632.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,944 : 420,588 = 420,588 : x
  2. Step 2: Convert to fraction form
    285,944/420,588 = 420,588/x
  3. Step 3: Cross multiply
    285,944x = 420,588 × 420,588
  4. Step 4: Simplify right side
    285,944x = 176,894,265,744
  5. Step 5: Solve for x
    x = 176,894,265,744/285,944
  6. Step 6: Final answer
    x = 618,632.55

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.