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Finding the Fourth Proportional to 498,561.61, 747,999.78 and 379,190.37

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Solution

The fourth proportional to 498,561.61, 747,999.78 and 379,190.37 is: 568,905.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,561.61 : 747,999.78 = 379,190.37 : x
  2. Step 2: Convert to fraction form
    498,561.61/747,999.78 = 379,190.37/x
  3. Step 3: Cross multiply
    498,561.61x = 747,999.78 × 379,190.37
  4. Step 4: Simplify right side
    498,561.61x = 283,634,313,338.12
  5. Step 5: Solve for x
    x = 283,634,313,338.12/498,561.61
  6. Step 6: Final answer
    x = 568,905.24

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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.