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Finding the Fourth Proportional to 806,542.63, 1,210,654.66 and 357,578.78

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Solution

The fourth proportional to 806,542.63, 1,210,654.66 and 357,578.78 is: 536,740.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,542.63 : 1,210,654.66 = 357,578.78 : x
  2. Step 2: Convert to fraction form
    806,542.63/1,210,654.66 = 357,578.78/x
  3. Step 3: Cross multiply
    806,542.63x = 1,210,654.66 × 357,578.78
  4. Step 4: Simplify right side
    806,542.63x = 432,904,416,324.12
  5. Step 5: Solve for x
    x = 432,904,416,324.12/806,542.63
  6. Step 6: Final answer
    x = 536,740.90

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