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Finding the Fourth Proportional to 639,272.94, 882,194.86 and 352,790.98

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Solution

The fourth proportional to 639,272.94, 882,194.86 and 352,790.98 is: 486,850.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,272.94 : 882,194.86 = 352,790.98 : x
  2. Step 2: Convert to fraction form
    639,272.94/882,194.86 = 352,790.98/x
  3. Step 3: Cross multiply
    639,272.94x = 882,194.86 × 352,790.98
  4. Step 4: Simplify right side
    639,272.94x = 311,230,389,210.36
  5. Step 5: Solve for x
    x = 311,230,389,210.36/639,272.94
  6. Step 6: Final answer
    x = 486,850.56

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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.