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Finding the Fourth Proportional to 531,810.20, 796,640.10 and 331,515.80

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Solution

The fourth proportional to 531,810.20, 796,640.10 and 331,515.80 is: 496,603.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,810.20 : 796,640.10 = 331,515.80 : x
  2. Step 2: Convert to fraction form
    531,810.20/796,640.10 = 331,515.80/x
  3. Step 3: Cross multiply
    531,810.20x = 796,640.10 × 331,515.80
  4. Step 4: Simplify right side
    531,810.20x = 264,098,780,063.58
  5. Step 5: Solve for x
    x = 264,098,780,063.58/531,810.20
  6. Step 6: Final answer
    x = 496,603.45

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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.