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Finding the Third Proportional to 420,613.50 and 635,937.75

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Solution

The third proportional to 420,613.50 and 635,937.75 is: 961,492.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,613.50 : 635,937.75 = 635,937.75 : x
  2. Step 2: Convert to fraction form
    420,613.50/635,937.75 = 635,937.75/x
  3. Step 3: Cross multiply
    420,613.50x = 635,937.75 × 635,937.75
  4. Step 4: Simplify right side
    420,613.50x = 404,416,821,875.06
  5. Step 5: Solve for x
    x = 404,416,821,875.06/420,613.50
  6. Step 6: Final answer
    x = 961,492.73

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.