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Finding the Fourth Proportional to 978,190.35, 1,467,285.53 and 694,755.15

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Solution

The fourth proportional to 978,190.35, 1,467,285.53 and 694,755.15 is: 1,042,132.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,190.35 : 1,467,285.53 = 694,755.15 : x
  2. Step 2: Convert to fraction form
    978,190.35/1,467,285.53 = 694,755.15/x
  3. Step 3: Cross multiply
    978,190.35x = 1,467,285.53 × 694,755.15
  4. Step 4: Simplify right side
    978,190.35x = 1,019,404,175,014.20
  5. Step 5: Solve for x
    x = 1,019,404,175,014.20/978,190.35
  6. Step 6: Final answer
    x = 1,042,132.73

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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.