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Finding the Fourth Proportional to 515,910.15, 773,601.75 and 303,093.78

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Solution

The fourth proportional to 515,910.15, 773,601.75 and 303,093.78 is: 454,485.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,910.15 : 773,601.75 = 303,093.78 : x
  2. Step 2: Convert to fraction form
    515,910.15/773,601.75 = 303,093.78/x
  3. Step 3: Cross multiply
    515,910.15x = 773,601.75 × 303,093.78
  4. Step 4: Simplify right side
    515,910.15x = 234,473,878,622.12
  5. Step 5: Solve for x
    x = 234,473,878,622.12/515,910.15
  6. Step 6: Final answer
    x = 454,485.88

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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.