Home / 825,912.11-1,239,319.54-320,492.97

Finding the Fourth Proportional to 825,912.11, 1,239,319.54 and 320,492.97

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Solution

The fourth proportional to 825,912.11, 1,239,319.54 and 320,492.97 is: 480,914.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,912.11 : 1,239,319.54 = 320,492.97 : x
  2. Step 2: Convert to fraction form
    825,912.11/1,239,319.54 = 320,492.97/x
  3. Step 3: Cross multiply
    825,912.11x = 1,239,319.54 × 320,492.97
  4. Step 4: Simplify right side
    825,912.11x = 397,193,200,554.25
  5. Step 5: Solve for x
    x = 397,193,200,554.25/825,912.11
  6. Step 6: Final answer
    x = 480,914.61

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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.