Home / 919,874.82-1,380,041.87-320,844.59

Finding the Fourth Proportional to 919,874.82, 1,380,041.87 and 320,844.59

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Solution

The fourth proportional to 919,874.82, 1,380,041.87 and 320,844.59 is: 481,346.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,874.82 : 1,380,041.87 = 320,844.59 : x
  2. Step 2: Convert to fraction form
    919,874.82/1,380,041.87 = 320,844.59/x
  3. Step 3: Cross multiply
    919,874.82x = 1,380,041.87 × 320,844.59
  4. Step 4: Simplify right side
    919,874.82x = 442,778,959,458.55
  5. Step 5: Solve for x
    x = 442,778,959,458.55/919,874.82
  6. Step 6: Final answer
    x = 481,346.97

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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.