Home / 858,040.70-1,286,765.80-325,713.96

Finding the Fourth Proportional to 858,040.70, 1,286,765.80 and 325,713.96

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Solution

The fourth proportional to 858,040.70, 1,286,765.80 and 325,713.96 is: 488,458.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,040.70 : 1,286,765.80 = 325,713.96 : x
  2. Step 2: Convert to fraction form
    858,040.70/1,286,765.80 = 325,713.96/x
  3. Step 3: Cross multiply
    858,040.70x = 1,286,765.80 × 325,713.96
  4. Step 4: Simplify right side
    858,040.70x = 419,117,583,496.28
  5. Step 5: Solve for x
    x = 419,117,583,496.28/858,040.70
  6. Step 6: Final answer
    x = 488,458.86

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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.