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Finding the Fourth Proportional to 571,640.19, 788,895 and 316,985.91

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Solution

The fourth proportional to 571,640.19, 788,895 and 316,985.91 is: 437,458.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,640.19 : 788,895 = 316,985.91 : x
  2. Step 2: Convert to fraction form
    571,640.19/788,895 = 316,985.91/x
  3. Step 3: Cross multiply
    571,640.19x = 788,895 × 316,985.91
  4. Step 4: Simplify right side
    571,640.19x = 250,068,599,469.45
  5. Step 5: Solve for x
    x = 250,068,599,469.45/571,640.19
  6. Step 6: Final answer
    x = 437,458.04

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