Home / 491,849.70-678,765.24-276,997.20

Finding the Fourth Proportional to 491,849.70, 678,765.24 and 276,997.20

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Solution

The fourth proportional to 491,849.70, 678,765.24 and 276,997.20 is: 382,263.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,849.70 : 678,765.24 = 276,997.20 : x
  2. Step 2: Convert to fraction form
    491,849.70/678,765.24 = 276,997.20/x
  3. Step 3: Cross multiply
    491,849.70x = 678,765.24 × 276,997.20
  4. Step 4: Simplify right side
    491,849.70x = 188,016,070,937.33
  5. Step 5: Solve for x
    x = 188,016,070,937.33/491,849.70
  6. Step 6: Final answer
    x = 382,263.26

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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.