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Finding the Fourth Proportional to 663,620.73, 994,800.45 and 423,059.37

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Solution

The fourth proportional to 663,620.73, 994,800.45 and 423,059.37 is: 634,187.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,620.73 : 994,800.45 = 423,059.37 : x
  2. Step 2: Convert to fraction form
    663,620.73/994,800.45 = 423,059.37/x
  3. Step 3: Cross multiply
    663,620.73x = 994,800.45 × 423,059.37
  4. Step 4: Simplify right side
    663,620.73x = 420,859,651,652.72
  5. Step 5: Solve for x
    x = 420,859,651,652.72/663,620.73
  6. Step 6: Final answer
    x = 634,187.02

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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.