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Finding the Fourth Proportional to 647,757.09, 893,906.15 and 361,269.81

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Solution

The fourth proportional to 647,757.09, 893,906.15 and 361,269.81 is: 498,553.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,757.09 : 893,906.15 = 361,269.81 : x
  2. Step 2: Convert to fraction form
    647,757.09/893,906.15 = 361,269.81/x
  3. Step 3: Cross multiply
    647,757.09x = 893,906.15 × 361,269.81
  4. Step 4: Simplify right side
    647,757.09x = 322,941,303,161.98
  5. Step 5: Solve for x
    x = 322,941,303,161.98/647,757.09
  6. Step 6: Final answer
    x = 498,553.10

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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.