Home / 858,954.60-1,288,016.70-318,838.44

Finding the Fourth Proportional to 858,954.60, 1,288,016.70 and 318,838.44

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Solution

The fourth proportional to 858,954.60, 1,288,016.70 and 318,838.44 is: 478,103.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,954.60 : 1,288,016.70 = 318,838.44 : x
  2. Step 2: Convert to fraction form
    858,954.60/1,288,016.70 = 318,838.44/x
  3. Step 3: Cross multiply
    858,954.60x = 1,288,016.70 × 318,838.44
  4. Step 4: Simplify right side
    858,954.60x = 410,669,235,321.95
  5. Step 5: Solve for x
    x = 410,669,235,321.95/858,954.60
  6. Step 6: Final answer
    x = 478,103.54

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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.