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Finding the Fourth Proportional to 639,205.03, 957,894 and 469,393.39

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Solution

The fourth proportional to 639,205.03, 957,894 and 469,393.39 is: 703,419.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,205.03 : 957,894 = 469,393.39 : x
  2. Step 2: Convert to fraction form
    639,205.03/957,894 = 469,393.39/x
  3. Step 3: Cross multiply
    639,205.03x = 957,894 × 469,393.39
  4. Step 4: Simplify right side
    639,205.03x = 449,629,111,920.66
  5. Step 5: Solve for x
    x = 449,629,111,920.66/639,205.03
  6. Step 6: Final answer
    x = 703,419.23

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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.