Home / 492,938.46-680,286.54-278,000.10

Finding the Fourth Proportional to 492,938.46, 680,286.54 and 278,000.10

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Solution

The fourth proportional to 492,938.46, 680,286.54 and 278,000.10 is: 383,657.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,938.46 : 680,286.54 = 278,000.10 : x
  2. Step 2: Convert to fraction form
    492,938.46/680,286.54 = 278,000.10/x
  3. Step 3: Cross multiply
    492,938.46x = 680,286.54 × 278,000.10
  4. Step 4: Simplify right side
    492,938.46x = 189,119,726,148.65
  5. Step 5: Solve for x
    x = 189,119,726,148.65/492,938.46
  6. Step 6: Final answer
    x = 383,657.88

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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.