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Finding the Fourth Proportional to 571,311.22, 788,382.30 and 329,671.48

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Solution

The fourth proportional to 571,311.22, 788,382.30 and 329,671.48 is: 454,930.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,311.22 : 788,382.30 = 329,671.48 : x
  2. Step 2: Convert to fraction form
    571,311.22/788,382.30 = 329,671.48/x
  3. Step 3: Cross multiply
    571,311.22x = 788,382.30 × 329,671.48
  4. Step 4: Simplify right side
    571,311.22x = 259,907,159,646.80
  5. Step 5: Solve for x
    x = 259,907,159,646.80/571,311.22
  6. Step 6: Final answer
    x = 454,930.96

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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.