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Finding the Fourth Proportional to 639,078.88, 957,704.86 and 469,266.84

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Solution

The fourth proportional to 639,078.88, 957,704.86 and 469,266.84 is: 703,229.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,078.88 : 957,704.86 = 469,266.84 : x
  2. Step 2: Convert to fraction form
    639,078.88/957,704.86 = 469,266.84/x
  3. Step 3: Cross multiply
    639,078.88x = 957,704.86 × 469,266.84
  4. Step 4: Simplify right side
    639,078.88x = 449,419,133,304.84
  5. Step 5: Solve for x
    x = 449,419,133,304.84/639,078.88
  6. Step 6: Final answer
    x = 703,229.52

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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.