Home / 979,911.37-1,469,294.78-380,171.71

Finding the Fourth Proportional to 979,911.37, 1,469,294.78 and 380,171.71

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Solution

The fourth proportional to 979,911.37, 1,469,294.78 and 380,171.71 is: 570,035.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,911.37 : 1,469,294.78 = 380,171.71 : x
  2. Step 2: Convert to fraction form
    979,911.37/1,469,294.78 = 380,171.71/x
  3. Step 3: Cross multiply
    979,911.37x = 1,469,294.78 × 380,171.71
  4. Step 4: Simplify right side
    979,911.37x = 558,584,301,660.20
  5. Step 5: Solve for x
    x = 558,584,301,660.20/979,911.37
  6. Step 6: Final answer
    x = 570,035.54

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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.