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Finding the Fourth Proportional to 405,029.84, 606,879.09 and 138,645.04

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Solution

The fourth proportional to 405,029.84, 606,879.09 and 138,645.04 is: 207,739.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,029.84 : 606,879.09 = 138,645.04 : x
  2. Step 2: Convert to fraction form
    405,029.84/606,879.09 = 138,645.04/x
  3. Step 3: Cross multiply
    405,029.84x = 606,879.09 × 138,645.04
  4. Step 4: Simplify right side
    405,029.84x = 84,140,775,708.21
  5. Step 5: Solve for x
    x = 84,140,775,708.21/405,029.84
  6. Step 6: Final answer
    x = 207,739.70

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