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Finding the Fourth Proportional to 646,759.37, 969,403.37 and 393,481.56

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Solution

The fourth proportional to 646,759.37, 969,403.37 and 393,481.56 is: 589,774.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,759.37 : 969,403.37 = 393,481.56 : x
  2. Step 2: Convert to fraction form
    646,759.37/969,403.37 = 393,481.56/x
  3. Step 3: Cross multiply
    646,759.37x = 969,403.37 × 393,481.56
  4. Step 4: Simplify right side
    646,759.37x = 381,442,350,296.86
  5. Step 5: Solve for x
    x = 381,442,350,296.86/646,759.37
  6. Step 6: Final answer
    x = 589,774.76

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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.