Home / 820,361.94-1,230,665.97-287,789.16

Finding the Fourth Proportional to 820,361.94, 1,230,665.97 and 287,789.16

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Solution

The fourth proportional to 820,361.94, 1,230,665.97 and 287,789.16 is: 431,726.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,361.94 : 1,230,665.97 = 287,789.16 : x
  2. Step 2: Convert to fraction form
    820,361.94/1,230,665.97 = 287,789.16/x
  3. Step 3: Cross multiply
    820,361.94x = 1,230,665.97 × 287,789.16
  4. Step 4: Simplify right side
    820,361.94x = 354,172,325,746.89
  5. Step 5: Solve for x
    x = 354,172,325,746.89/820,361.94
  6. Step 6: Final answer
    x = 431,726.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.