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Finding the Fourth Proportional to 638,495.47, 881,129.87 and 352,025.83

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Solution

The fourth proportional to 638,495.47, 881,129.87 and 352,025.83 is: 485,799.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,495.47 : 881,129.87 = 352,025.83 : x
  2. Step 2: Convert to fraction form
    638,495.47/881,129.87 = 352,025.83/x
  3. Step 3: Cross multiply
    638,495.47x = 881,129.87 × 352,025.83
  4. Step 4: Simplify right side
    638,495.47x = 310,180,473,824.54
  5. Step 5: Solve for x
    x = 310,180,473,824.54/638,495.47
  6. Step 6: Final answer
    x = 485,799.02

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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.