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Finding the Fourth Proportional to 490,049.88, 676,247.88 and 286,112.10

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Solution

The fourth proportional to 490,049.88, 676,247.88 and 286,112.10 is: 394,822.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,049.88 : 676,247.88 = 286,112.10 : x
  2. Step 2: Convert to fraction form
    490,049.88/676,247.88 = 286,112.10/x
  3. Step 3: Cross multiply
    490,049.88x = 676,247.88 × 286,112.10
  4. Step 4: Simplify right side
    490,049.88x = 193,482,701,067.35
  5. Step 5: Solve for x
    x = 193,482,701,067.35/490,049.88
  6. Step 6: Final answer
    x = 394,822.46

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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.