Home / 493,211.44-680,634.12-278,360.56

Finding the Fourth Proportional to 493,211.44, 680,634.12 and 278,360.56

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Solution

The fourth proportional to 493,211.44, 680,634.12 and 278,360.56 is: 384,138.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,211.44 : 680,634.12 = 278,360.56 : x
  2. Step 2: Convert to fraction form
    493,211.44/680,634.12 = 278,360.56/x
  3. Step 3: Cross multiply
    493,211.44x = 680,634.12 × 278,360.56
  4. Step 4: Simplify right side
    493,211.44x = 189,461,694,798.31
  5. Step 5: Solve for x
    x = 189,461,694,798.31/493,211.44
  6. Step 6: Final answer
    x = 384,138.89

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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.