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Finding the Fourth Proportional to 379,853.62, 569,786.91 and 313,031.86

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Solution

The fourth proportional to 379,853.62, 569,786.91 and 313,031.86 is: 469,553.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,853.62 : 569,786.91 = 313,031.86 : x
  2. Step 2: Convert to fraction form
    379,853.62/569,786.91 = 313,031.86/x
  3. Step 3: Cross multiply
    379,853.62x = 569,786.91 × 313,031.86
  4. Step 4: Simplify right side
    379,853.62x = 178,361,456,240.95
  5. Step 5: Solve for x
    x = 178,361,456,240.95/379,853.62
  6. Step 6: Final answer
    x = 469,553.13

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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.