Home / 1,238,542.22-1,857,367.61-428,706.60

Finding the Fourth Proportional to 1,238,542.22, 1,857,367.61 and 428,706.60

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Solution

The fourth proportional to 1,238,542.22, 1,857,367.61 and 428,706.60 is: 642,905.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,542.22 : 1,857,367.61 = 428,706.60 : x
  2. Step 2: Convert to fraction form
    1,238,542.22/1,857,367.61 = 428,706.60/x
  3. Step 3: Cross multiply
    1,238,542.22x = 1,857,367.61 × 428,706.60
  4. Step 4: Simplify right side
    1,238,542.22x = 796,265,758,391.38
  5. Step 5: Solve for x
    x = 796,265,758,391.38/1,238,542.22
  6. Step 6: Final answer
    x = 642,905.62

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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.