Home / 490,899.72-677,428.08-276,034.20

Finding the Fourth Proportional to 490,899.72, 677,428.08 and 276,034.20

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Solution

The fourth proportional to 490,899.72, 677,428.08 and 276,034.20 is: 380,919.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,899.72 : 677,428.08 = 276,034.20 : x
  2. Step 2: Convert to fraction form
    490,899.72/677,428.08 = 276,034.20/x
  3. Step 3: Cross multiply
    490,899.72x = 677,428.08 × 276,034.20
  4. Step 4: Simplify right side
    490,899.72x = 186,993,318,120.34
  5. Step 5: Solve for x
    x = 186,993,318,120.34/490,899.72
  6. Step 6: Final answer
    x = 380,919.59

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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.