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Finding the Fourth Proportional to 498,546.80, 688,894.22 and 355,057.73

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Solution

The fourth proportional to 498,546.80, 688,894.22 and 355,057.73 is: 490,620.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,546.80 : 688,894.22 = 355,057.73 : x
  2. Step 2: Convert to fraction form
    498,546.80/688,894.22 = 355,057.73/x
  3. Step 3: Cross multiply
    498,546.80x = 688,894.22 × 355,057.73
  4. Step 4: Simplify right side
    498,546.80x = 244,597,216,188.03
  5. Step 5: Solve for x
    x = 244,597,216,188.03/498,546.80
  6. Step 6: Final answer
    x = 490,620.37

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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.