Home / 490,921.57-677,467.49-276,057.06

Finding the Fourth Proportional to 490,921.57, 677,467.49 and 276,057.06

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Solution

The fourth proportional to 490,921.57, 677,467.49 and 276,057.06 is: 380,956.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,921.57 : 677,467.49 = 276,057.06 : x
  2. Step 2: Convert to fraction form
    490,921.57/677,467.49 = 276,057.06/x
  3. Step 3: Cross multiply
    490,921.57x = 677,467.49 × 276,057.06
  4. Step 4: Simplify right side
    490,921.57x = 187,019,683,534.98
  5. Step 5: Solve for x
    x = 187,019,683,534.98/490,921.57
  6. Step 6: Final answer
    x = 380,956.34

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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.