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Finding the Fourth Proportional to 493,334.70, 680,933.46 and 278,600.46

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Solution

The fourth proportional to 493,334.70, 680,933.46 and 278,600.46 is: 384,542.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,334.70 : 680,933.46 = 278,600.46 : x
  2. Step 2: Convert to fraction form
    493,334.70/680,933.46 = 278,600.46/x
  3. Step 3: Cross multiply
    493,334.70x = 680,933.46 × 278,600.46
  4. Step 4: Simplify right side
    493,334.70x = 189,708,375,185.39
  5. Step 5: Solve for x
    x = 189,708,375,185.39/493,334.70
  6. Step 6: Final answer
    x = 384,542.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.