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Finding the Fourth Proportional to 505,091.03, 697,041.86 and 287,294.12

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Solution

The fourth proportional to 505,091.03, 697,041.86 and 287,294.12 is: 396,475.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,091.03 : 697,041.86 = 287,294.12 : x
  2. Step 2: Convert to fraction form
    505,091.03/697,041.86 = 287,294.12/x
  3. Step 3: Cross multiply
    505,091.03x = 697,041.86 × 287,294.12
  4. Step 4: Simplify right side
    505,091.03x = 200,256,023,503.66
  5. Step 5: Solve for x
    x = 200,256,023,503.66/505,091.03
  6. Step 6: Final answer
    x = 396,475.11

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