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Finding the Fourth Proportional to 639,131.10, 958,695.49 and 372,704.77

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Solution

The fourth proportional to 639,131.10, 958,695.49 and 372,704.77 is: 559,056.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,131.10 : 958,695.49 = 372,704.77 : x
  2. Step 2: Convert to fraction form
    639,131.10/958,695.49 = 372,704.77/x
  3. Step 3: Cross multiply
    639,131.10x = 958,695.49 × 372,704.77
  4. Step 4: Simplify right side
    639,131.10x = 357,310,382,100.49
  5. Step 5: Solve for x
    x = 357,310,382,100.49/639,131.10
  6. Step 6: Final answer
    x = 559,056.48

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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.