Home / 1,386,912.27-2,080,563.82-427,445.47

Finding the Fourth Proportional to 1,386,912.27, 2,080,563.82 and 427,445.47

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Solution

The fourth proportional to 1,386,912.27, 2,080,563.82 and 427,445.47 is: 641,228.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,912.27 : 2,080,563.82 = 427,445.47 : x
  2. Step 2: Convert to fraction form
    1,386,912.27/2,080,563.82 = 427,445.47/x
  3. Step 3: Cross multiply
    1,386,912.27x = 2,080,563.82 × 427,445.47
  4. Step 4: Simplify right side
    1,386,912.27x = 889,327,568,433.46
  5. Step 5: Solve for x
    x = 889,327,568,433.46/1,386,912.27
  6. Step 6: Final answer
    x = 641,228.42

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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.