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Finding the Fourth Proportional to 531,809.20, 796,638.60 and 331,514.80

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Solution

The fourth proportional to 531,809.20, 796,638.60 and 331,514.80 is: 496,601.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,809.20 : 796,638.60 = 331,514.80 : x
  2. Step 2: Convert to fraction form
    531,809.20/796,638.60 = 331,514.80/x
  3. Step 3: Cross multiply
    531,809.20x = 796,638.60 × 331,514.80
  4. Step 4: Simplify right side
    531,809.20x = 264,097,486,151.28
  5. Step 5: Solve for x
    x = 264,097,486,151.28/531,809.20
  6. Step 6: Final answer
    x = 496,601.95

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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.