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Finding the Fourth Proportional to 647,734.22, 893,874.81 and 361,272.86

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Solution

The fourth proportional to 647,734.22, 893,874.81 and 361,272.86 is: 498,557.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,734.22 : 893,874.81 = 361,272.86 : x
  2. Step 2: Convert to fraction form
    647,734.22/893,874.81 = 361,272.86/x
  3. Step 3: Cross multiply
    647,734.22x = 893,874.81 × 361,272.86
  4. Step 4: Simplify right side
    647,734.22x = 322,932,709,090.66
  5. Step 5: Solve for x
    x = 322,932,709,090.66/647,734.22
  6. Step 6: Final answer
    x = 498,557.43

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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.