Home / 919,989.22-1,379,546.79-320,877.58

Finding the Fourth Proportional to 919,989.22, 1,379,546.79 and 320,877.58

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Solution

The fourth proportional to 919,989.22, 1,379,546.79 and 320,877.58 is: 481,163.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,989.22 : 1,379,546.79 = 320,877.58 : x
  2. Step 2: Convert to fraction form
    919,989.22/1,379,546.79 = 320,877.58/x
  3. Step 3: Cross multiply
    919,989.22x = 1,379,546.79 × 320,877.58
  4. Step 4: Simplify right side
    919,989.22x = 442,665,635,471.97
  5. Step 5: Solve for x
    x = 442,665,635,471.97/919,989.22
  6. Step 6: Final answer
    x = 481,163.94

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1.5x scale

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.