Home / 1,189,128.18-1,640,310.61-758,923.41

Finding the Fourth Proportional to 1,189,128.18, 1,640,310.61 and 758,923.41

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Solution

The fourth proportional to 1,189,128.18, 1,640,310.61 and 758,923.41 is: 1,046,876.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,128.18 : 1,640,310.61 = 758,923.41 : x
  2. Step 2: Convert to fraction form
    1,189,128.18/1,640,310.61 = 758,923.41/x
  3. Step 3: Cross multiply
    1,189,128.18x = 1,640,310.61 × 758,923.41
  4. Step 4: Simplify right side
    1,189,128.18x = 1,244,870,121,600.38
  5. Step 5: Solve for x
    x = 1,244,870,121,600.38/1,189,128.18
  6. Step 6: Final answer
    x = 1,046,876.31

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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.