Home / 492,918.21-680,234.90-278,062.47

Finding the Fourth Proportional to 492,918.21, 680,234.90 and 278,062.47

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Solution

The fourth proportional to 492,918.21, 680,234.90 and 278,062.47 is: 383,730.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,918.21 : 680,234.90 = 278,062.47 : x
  2. Step 2: Convert to fraction form
    492,918.21/680,234.90 = 278,062.47/x
  3. Step 3: Cross multiply
    492,918.21x = 680,234.90 × 278,062.47
  4. Step 4: Simplify right side
    492,918.21x = 189,147,795,083.89
  5. Step 5: Solve for x
    x = 189,147,795,083.89/492,918.21
  6. Step 6: Final answer
    x = 383,730.59

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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.