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Finding the Fourth Proportional to 647,731.22, 893,870.67 and 361,269.86

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Solution

The fourth proportional to 647,731.22, 893,870.67 and 361,269.86 is: 498,553.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,731.22 : 893,870.67 = 361,269.86 : x
  2. Step 2: Convert to fraction form
    647,731.22/893,870.67 = 361,269.86/x
  3. Step 3: Cross multiply
    647,731.22x = 893,870.67 × 361,269.86
  4. Step 4: Simplify right side
    647,731.22x = 322,928,531,809.01
  5. Step 5: Solve for x
    x = 322,928,531,809.01/647,731.22
  6. Step 6: Final answer
    x = 498,553.29

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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.