Home / 1,243,838.82-1,865,751.86-485,757.28

Finding the Fourth Proportional to 1,243,838.82, 1,865,751.86 and 485,757.28

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Solution

The fourth proportional to 1,243,838.82, 1,865,751.86 and 485,757.28 is: 728,633.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243,838.82 : 1,865,751.86 = 485,757.28 : x
  2. Step 2: Convert to fraction form
    1,243,838.82/1,865,751.86 = 485,757.28/x
  3. Step 3: Cross multiply
    1,243,838.82x = 1,865,751.86 × 485,757.28
  4. Step 4: Simplify right side
    1,243,838.82x = 906,302,548,668.54
  5. Step 5: Solve for x
    x = 906,302,548,668.54/1,243,838.82
  6. Step 6: Final answer
    x = 728,633.43

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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.