Home / 490,218.40-676,396.44-286,176.72

Finding the Fourth Proportional to 490,218.40, 676,396.44 and 286,176.72

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Solution

The fourth proportional to 490,218.40, 676,396.44 and 286,176.72 is: 394,862.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,218.40 : 676,396.44 = 286,176.72 : x
  2. Step 2: Convert to fraction form
    490,218.40/676,396.44 = 286,176.72/x
  3. Step 3: Cross multiply
    490,218.40x = 676,396.44 × 286,176.72
  4. Step 4: Simplify right side
    490,218.40x = 193,568,914,618.88
  5. Step 5: Solve for x
    x = 193,568,914,618.88/490,218.40
  6. Step 6: Final answer
    x = 394,862.61

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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.