Home / 492,961.12-680,292.96-278,100.52

Finding the Fourth Proportional to 492,961.12, 680,292.96 and 278,100.52

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Solution

The fourth proportional to 492,961.12, 680,292.96 and 278,100.52 is: 383,782.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,961.12 : 680,292.96 = 278,100.52 : x
  2. Step 2: Convert to fraction form
    492,961.12/680,292.96 = 278,100.52/x
  3. Step 3: Cross multiply
    492,961.12x = 680,292.96 × 278,100.52
  4. Step 4: Simplify right side
    492,961.12x = 189,189,825,928.34
  5. Step 5: Solve for x
    x = 189,189,825,928.34/492,961.12
  6. Step 6: Final answer
    x = 383,782.45

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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.