Home / 863,378.73-1,294,329.42-331,281.63

Finding the Fourth Proportional to 863,378.73, 1,294,329.42 and 331,281.63

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Solution

The fourth proportional to 863,378.73, 1,294,329.42 and 331,281.63 is: 496,639.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,378.73 : 1,294,329.42 = 331,281.63 : x
  2. Step 2: Convert to fraction form
    863,378.73/1,294,329.42 = 331,281.63/x
  3. Step 3: Cross multiply
    863,378.73x = 1,294,329.42 × 331,281.63
  4. Step 4: Simplify right side
    863,378.73x = 428,787,560,014.56
  5. Step 5: Solve for x
    x = 428,787,560,014.56/863,378.73
  6. Step 6: Final answer
    x = 496,639.01

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Double scale
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1.5x scale

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.