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Finding the Fourth Proportional to 647,809.27, 893,974.46 and 361,329.13

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Solution

The fourth proportional to 647,809.27, 893,974.46 and 361,329.13 is: 498,632.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,809.27 : 893,974.46 = 361,329.13 : x
  2. Step 2: Convert to fraction form
    647,809.27/893,974.46 = 361,329.13/x
  3. Step 3: Cross multiply
    647,809.27x = 893,974.46 × 361,329.13
  4. Step 4: Simplify right side
    647,809.27x = 323,019,012,067.37
  5. Step 5: Solve for x
    x = 323,019,012,067.37/647,809.27
  6. Step 6: Final answer
    x = 498,632.90

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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.