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Finding the Fourth Proportional to 533,443.07, 800,789.72 and 421,198.94

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Solution

The fourth proportional to 533,443.07, 800,789.72 and 421,198.94 is: 632,291.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    533,443.07 : 800,789.72 = 421,198.94 : x
  2. Step 2: Convert to fraction form
    533,443.07/800,789.72 = 421,198.94/x
  3. Step 3: Cross multiply
    533,443.07x = 800,789.72 × 421,198.94
  4. Step 4: Simplify right side
    533,443.07x = 337,291,775,116.95
  5. Step 5: Solve for x
    x = 337,291,775,116.95/533,443.07
  6. Step 6: Final answer
    x = 632,291.99

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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.