Home / 492,939.20-680,287.59-278,000.84

Finding the Fourth Proportional to 492,939.20, 680,287.59 and 278,000.84

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Solution

The fourth proportional to 492,939.20, 680,287.59 and 278,000.84 is: 383,658.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,939.20 : 680,287.59 = 278,000.84 : x
  2. Step 2: Convert to fraction form
    492,939.20/680,287.59 = 278,000.84/x
  3. Step 3: Cross multiply
    492,939.20x = 680,287.59 × 278,000.84
  4. Step 4: Simplify right side
    492,939.20x = 189,120,518,060.14
  5. Step 5: Solve for x
    x = 189,120,518,060.14/492,939.20
  6. Step 6: Final answer
    x = 383,658.92

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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.