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Finding the Fourth Proportional to 639,853.50, 882,997.83 and 371,598.78

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Solution

The fourth proportional to 639,853.50, 882,997.83 and 371,598.78 is: 512,806.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,853.50 : 882,997.83 = 371,598.78 : x
  2. Step 2: Convert to fraction form
    639,853.50/882,997.83 = 371,598.78/x
  3. Step 3: Cross multiply
    639,853.50x = 882,997.83 × 371,598.78
  4. Step 4: Simplify right side
    639,853.50x = 328,120,916,370.65
  5. Step 5: Solve for x
    x = 328,120,916,370.65/639,853.50
  6. Step 6: Final answer
    x = 512,806.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.