Home / 493,385.27-680,889.31-278,563.55

Finding the Fourth Proportional to 493,385.27, 680,889.31 and 278,563.55

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Solution

The fourth proportional to 493,385.27, 680,889.31 and 278,563.55 is: 384,427.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,385.27 : 680,889.31 = 278,563.55 : x
  2. Step 2: Convert to fraction form
    493,385.27/680,889.31 = 278,563.55/x
  3. Step 3: Cross multiply
    493,385.27x = 680,889.31 × 278,563.55
  4. Step 4: Simplify right side
    493,385.27x = 189,670,939,249.80
  5. Step 5: Solve for x
    x = 189,670,939,249.80/493,385.27
  6. Step 6: Final answer
    x = 384,427.65

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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.