Home / 685,729.56-1,028,512.44-180,329.92

Finding the Fourth Proportional to 685,729.56, 1,028,512.44 and 180,329.92

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Solution

The fourth proportional to 685,729.56, 1,028,512.44 and 180,329.92 is: 270,473.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,729.56 : 1,028,512.44 = 180,329.92 : x
  2. Step 2: Convert to fraction form
    685,729.56/1,028,512.44 = 180,329.92/x
  3. Step 3: Cross multiply
    685,729.56x = 1,028,512.44 × 180,329.92
  4. Step 4: Simplify right side
    685,729.56x = 185,471,566,024.21
  5. Step 5: Solve for x
    x = 185,471,566,024.21/685,729.56
  6. Step 6: Final answer
    x = 270,473.34

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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.