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Finding the Fourth Proportional to 493,207.44, 680,628.60 and 278,356.56

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Solution

The fourth proportional to 493,207.44, 680,628.60 and 278,356.56 is: 384,133.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,207.44 : 680,628.60 = 278,356.56 : x
  2. Step 2: Convert to fraction form
    493,207.44/680,628.60 = 278,356.56/x
  3. Step 3: Cross multiply
    493,207.44x = 680,628.60 × 278,356.56
  4. Step 4: Simplify right side
    493,207.44x = 189,457,435,733.62
  5. Step 5: Solve for x
    x = 189,457,435,733.62/493,207.44
  6. Step 6: Final answer
    x = 384,133.37

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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.