Home / 490,819.36-677,313.24-275,971.72

Finding the Fourth Proportional to 490,819.36, 677,313.24 and 275,971.72

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Solution

The fourth proportional to 490,819.36, 677,313.24 and 275,971.72 is: 380,831.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,819.36 : 677,313.24 = 275,971.72 : x
  2. Step 2: Convert to fraction form
    490,819.36/677,313.24 = 275,971.72/x
  3. Step 3: Cross multiply
    490,819.36x = 677,313.24 × 275,971.72
  4. Step 4: Simplify right side
    490,819.36x = 186,919,299,821.57
  5. Step 5: Solve for x
    x = 186,919,299,821.57/490,819.36
  6. Step 6: Final answer
    x = 380,831.15

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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.