Home / 1,332,003.96-1,838,128.14-728,379

Finding the Fourth Proportional to 1,332,003.96, 1,838,128.14 and 728,379

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Solution

The fourth proportional to 1,332,003.96, 1,838,128.14 and 728,379 is: 1,005,142.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,332,003.96 : 1,838,128.14 = 728,379 : x
  2. Step 2: Convert to fraction form
    1,332,003.96/1,838,128.14 = 728,379/x
  3. Step 3: Cross multiply
    1,332,003.96x = 1,838,128.14 × 728,379
  4. Step 4: Simplify right side
    1,332,003.96x = 1,338,853,936,485.06
  5. Step 5: Solve for x
    x = 1,338,853,936,485.06/1,332,003.96
  6. Step 6: Final answer
    x = 1,005,142.61

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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.