Home / 490,629.58-677,088-275,768.98

Finding the Fourth Proportional to 490,629.58, 677,088 and 275,768.98

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Solution

The fourth proportional to 490,629.58, 677,088 and 275,768.98 is: 380,571.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,629.58 : 677,088 = 275,768.98 : x
  2. Step 2: Convert to fraction form
    490,629.58/677,088 = 275,768.98/x
  3. Step 3: Cross multiply
    490,629.58x = 677,088 × 275,768.98
  4. Step 4: Simplify right side
    490,629.58x = 186,719,867,130.24
  5. Step 5: Solve for x
    x = 186,719,867,130.24/490,629.58
  6. Step 6: Final answer
    x = 380,571.97

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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.