Home / 789,945.60-1,185,105.60-257,469.60

Finding the Fourth Proportional to 789,945.60, 1,185,105.60 and 257,469.60

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Solution

The fourth proportional to 789,945.60, 1,185,105.60 and 257,469.60 is: 386,265.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,945.60 : 1,185,105.60 = 257,469.60 : x
  2. Step 2: Convert to fraction form
    789,945.60/1,185,105.60 = 257,469.60/x
  3. Step 3: Cross multiply
    789,945.60x = 1,185,105.60 × 257,469.60
  4. Step 4: Simplify right side
    789,945.60x = 305,128,664,789.76
  5. Step 5: Solve for x
    x = 305,128,664,789.76/789,945.60
  6. Step 6: Final answer
    x = 386,265.41

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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.