Home / 1,238,489.41-1,857,861.65-428,872.26

Finding the Fourth Proportional to 1,238,489.41, 1,857,861.65 and 428,872.26

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Solution

The fourth proportional to 1,238,489.41, 1,857,861.65 and 428,872.26 is: 643,352.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,489.41 : 1,857,861.65 = 428,872.26 : x
  2. Step 2: Convert to fraction form
    1,238,489.41/1,857,861.65 = 428,872.26/x
  3. Step 3: Cross multiply
    1,238,489.41x = 1,857,861.65 × 428,872.26
  4. Step 4: Simplify right side
    1,238,489.41x = 796,785,321,688.31
  5. Step 5: Solve for x
    x = 796,785,321,688.31/1,238,489.41
  6. Step 6: Final answer
    x = 643,352.55

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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.