Home / 685,735.19-1,028,520.87-180,335.55

Finding the Fourth Proportional to 685,735.19, 1,028,520.87 and 180,335.55

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Solution

The fourth proportional to 685,735.19, 1,028,520.87 and 180,335.55 is: 270,481.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,735.19 : 1,028,520.87 = 180,335.55 : x
  2. Step 2: Convert to fraction form
    685,735.19/1,028,520.87 = 180,335.55/x
  3. Step 3: Cross multiply
    685,735.19x = 1,028,520.87 × 180,335.55
  4. Step 4: Simplify right side
    685,735.19x = 185,478,876,777.93
  5. Step 5: Solve for x
    x = 185,478,876,777.93/685,735.19
  6. Step 6: Final answer
    x = 270,481.78

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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.