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Finding the Fourth Proportional to 520,093.80, 779,708.70 and 220,804.20

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Solution

The fourth proportional to 520,093.80, 779,708.70 and 220,804.20 is: 331,022.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,093.80 : 779,708.70 = 220,804.20 : x
  2. Step 2: Convert to fraction form
    520,093.80/779,708.70 = 220,804.20/x
  3. Step 3: Cross multiply
    520,093.80x = 779,708.70 × 220,804.20
  4. Step 4: Simplify right side
    520,093.80x = 172,162,955,736.54
  5. Step 5: Solve for x
    x = 172,162,955,736.54/520,093.80
  6. Step 6: Final answer
    x = 331,022.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.