Home / 685,233.80-1,027,879.48-211,928.12

Finding the Fourth Proportional to 685,233.80, 1,027,879.48 and 211,928.12

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Solution

The fourth proportional to 685,233.80, 1,027,879.48 and 211,928.12 is: 317,901.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,233.80 : 1,027,879.48 = 211,928.12 : x
  2. Step 2: Convert to fraction form
    685,233.80/1,027,879.48 = 211,928.12/x
  3. Step 3: Cross multiply
    685,233.80x = 1,027,879.48 × 211,928.12
  4. Step 4: Simplify right side
    685,233.80x = 217,836,565,782.98
  5. Step 5: Solve for x
    x = 217,836,565,782.98/685,233.80
  6. Step 6: Final answer
    x = 317,901.08

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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.