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Finding the Fourth Proportional to 494,385.17, 740,730.16 and 331,974.78

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Solution

The fourth proportional to 494,385.17, 740,730.16 and 331,974.78 is: 497,393.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,385.17 : 740,730.16 = 331,974.78 : x
  2. Step 2: Convert to fraction form
    494,385.17/740,730.16 = 331,974.78/x
  3. Step 3: Cross multiply
    494,385.17x = 740,730.16 × 331,974.78
  4. Step 4: Simplify right side
    494,385.17x = 245,903,729,031.65
  5. Step 5: Solve for x
    x = 245,903,729,031.65/494,385.17
  6. Step 6: Final answer
    x = 497,393.01

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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.