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Finding the Fourth Proportional to 620,804.78, 931,197.78 and 171,515.60

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Solution

The fourth proportional to 620,804.78, 931,197.78 and 171,515.60 is: 257,270.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,804.78 : 931,197.78 = 171,515.60 : x
  2. Step 2: Convert to fraction form
    620,804.78/931,197.78 = 171,515.60/x
  3. Step 3: Cross multiply
    620,804.78x = 931,197.78 × 171,515.60
  4. Step 4: Simplify right side
    620,804.78x = 159,714,945,955.37
  5. Step 5: Solve for x
    x = 159,714,945,955.37/620,804.78
  6. Step 6: Final answer
    x = 257,270.81

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