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Finding the Third Proportional to 420,264 and 630,828

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Solution

The third proportional to 420,264 and 630,828 is: 946,890.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,264 : 630,828 = 630,828 : x
  2. Step 2: Convert to fraction form
    420,264/630,828 = 630,828/x
  3. Step 3: Cross multiply
    420,264x = 630,828 × 630,828
  4. Step 4: Simplify right side
    420,264x = 397,943,965,584
  5. Step 5: Solve for x
    x = 397,943,965,584/420,264
  6. Step 6: Final answer
    x = 946,890.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.