Home / 1,439,124.78-2,158,310.79-427,974.24

Finding the Fourth Proportional to 1,439,124.78, 2,158,310.79 and 427,974.24

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Solution

The fourth proportional to 1,439,124.78, 2,158,310.79 and 427,974.24 is: 641,849.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439,124.78 : 2,158,310.79 = 427,974.24 : x
  2. Step 2: Convert to fraction form
    1,439,124.78/2,158,310.79 = 427,974.24/x
  3. Step 3: Cross multiply
    1,439,124.78x = 2,158,310.79 × 427,974.24
  4. Step 4: Simplify right side
    1,439,124.78x = 923,701,420,034.05
  5. Step 5: Solve for x
    x = 923,701,420,034.05/1,439,124.78
  6. Step 6: Final answer
    x = 641,849.43

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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.