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Finding the Fourth Proportional to 490,896.73, 677,441.52 and 276,034.91

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Solution

The fourth proportional to 490,896.73, 677,441.52 and 276,034.91 is: 380,930.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,896.73 : 677,441.52 = 276,034.91 : x
  2. Step 2: Convert to fraction form
    490,896.73/677,441.52 = 276,034.91/x
  3. Step 3: Cross multiply
    490,896.73x = 677,441.52 × 276,034.91
  4. Step 4: Simplify right side
    490,896.73x = 186,997,510,697.07
  5. Step 5: Solve for x
    x = 186,997,510,697.07/490,896.73
  6. Step 6: Final answer
    x = 380,930.45

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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.