Home / 1,204,896.80-1,662,865.13-661,138.47

Finding the Fourth Proportional to 1,204,896.80, 1,662,865.13 and 661,138.47

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Solution

The fourth proportional to 1,204,896.80, 1,662,865.13 and 661,138.47 is: 912,430.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,204,896.80 : 1,662,865.13 = 661,138.47 : x
  2. Step 2: Convert to fraction form
    1,204,896.80/1,662,865.13 = 661,138.47/x
  3. Step 3: Cross multiply
    1,204,896.80x = 1,662,865.13 × 661,138.47
  4. Step 4: Simplify right side
    1,204,896.80x = 1,099,384,109,517.40
  5. Step 5: Solve for x
    x = 1,099,384,109,517.40/1,204,896.80
  6. Step 6: Final answer
    x = 912,430.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.