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Finding the Fourth Proportional to 490,339.92, 676,632.64 and 275,515.78

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Solution

The fourth proportional to 490,339.92, 676,632.64 and 275,515.78 is: 380,191.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,339.92 : 676,632.64 = 275,515.78 : x
  2. Step 2: Convert to fraction form
    490,339.92/676,632.64 = 275,515.78/x
  3. Step 3: Cross multiply
    490,339.92x = 676,632.64 × 275,515.78
  4. Step 4: Simplify right side
    490,339.92x = 186,422,969,583.06
  5. Step 5: Solve for x
    x = 186,422,969,583.06/490,339.92
  6. Step 6: Final answer
    x = 380,191.30

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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.