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Finding the Third Proportional to 290,981 and 627,835

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Solution

The third proportional to 290,981 and 627,835 is: 1,354,647.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,981 : 627,835 = 627,835 : x
  2. Step 2: Convert to fraction form
    290,981/627,835 = 627,835/x
  3. Step 3: Cross multiply
    290,981x = 627,835 × 627,835
  4. Step 4: Simplify right side
    290,981x = 394,176,787,225
  5. Step 5: Solve for x
    x = 394,176,787,225/290,981
  6. Step 6: Final answer
    x = 1,354,647.85

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.