Home / 490,738.16-677,242.68-275,945.60

Finding the Fourth Proportional to 490,738.16, 677,242.68 and 275,945.60

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Solution

The fourth proportional to 490,738.16, 677,242.68 and 275,945.60 is: 380,818.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,738.16 : 677,242.68 = 275,945.60 : x
  2. Step 2: Convert to fraction form
    490,738.16/677,242.68 = 275,945.60/x
  3. Step 3: Cross multiply
    490,738.16x = 677,242.68 × 275,945.60
  4. Step 4: Simplify right side
    490,738.16x = 186,882,137,678.21
  5. Step 5: Solve for x
    x = 186,882,137,678.21/490,738.16
  6. Step 6: Final answer
    x = 380,818.43

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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.