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Finding the Fourth Proportional to 490,253.47, 676,617.87 and 275,409.88

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Solution

The fourth proportional to 490,253.47, 676,617.87 and 275,409.88 is: 380,103.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,253.47 : 676,617.87 = 275,409.88 : x
  2. Step 2: Convert to fraction form
    490,253.47/676,617.87 = 275,409.88/x
  3. Step 3: Cross multiply
    490,253.47x = 676,617.87 × 275,409.88
  4. Step 4: Simplify right side
    490,253.47x = 186,347,245,723.80
  5. Step 5: Solve for x
    x = 186,347,245,723.80/490,253.47
  6. Step 6: Final answer
    x = 380,103.88

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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.