Home / 919,150.11-1,378,762.25-320,171.85

Finding the Fourth Proportional to 919,150.11, 1,378,762.25 and 320,171.85

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Solution

The fourth proportional to 919,150.11, 1,378,762.25 and 320,171.85 is: 480,270.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,150.11 : 1,378,762.25 = 320,171.85 : x
  2. Step 2: Convert to fraction form
    919,150.11/1,378,762.25 = 320,171.85/x
  3. Step 3: Cross multiply
    919,150.11x = 1,378,762.25 × 320,171.85
  4. Step 4: Simplify right side
    919,150.11x = 441,440,858,691.80
  5. Step 5: Solve for x
    x = 441,440,858,691.80/919,150.11
  6. Step 6: Final answer
    x = 480,270.69

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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.