Home / 490,390.20-676,739.07-275,530.14

Finding the Fourth Proportional to 490,390.20, 676,739.07 and 275,530.14

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Solution

The fourth proportional to 490,390.20, 676,739.07 and 275,530.14 is: 380,231.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,390.20 : 676,739.07 = 275,530.14 : x
  2. Step 2: Convert to fraction form
    490,390.20/676,739.07 = 275,530.14/x
  3. Step 3: Cross multiply
    490,390.20x = 676,739.07 × 275,530.14
  4. Step 4: Simplify right side
    490,390.20x = 186,462,010,700.57
  5. Step 5: Solve for x
    x = 186,462,010,700.57/490,390.20
  6. Step 6: Final answer
    x = 380,231.93

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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.