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Finding the Fourth Proportional to 646,357.71, 892,010.43 and 388,313.58

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Solution

The fourth proportional to 646,357.71, 892,010.43 and 388,313.58 is: 535,894.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,357.71 : 892,010.43 = 388,313.58 : x
  2. Step 2: Convert to fraction form
    646,357.71/892,010.43 = 388,313.58/x
  3. Step 3: Cross multiply
    646,357.71x = 892,010.43 × 388,313.58
  4. Step 4: Simplify right side
    646,357.71x = 346,379,763,470.64
  5. Step 5: Solve for x
    x = 346,379,763,470.64/646,357.71
  6. Step 6: Final answer
    x = 535,894.84

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