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Finding the Fourth Proportional to 642,539.06, 886,709.14 and 356,063.93

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Solution

The fourth proportional to 642,539.06, 886,709.14 and 356,063.93 is: 491,371.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,539.06 : 886,709.14 = 356,063.93 : x
  2. Step 2: Convert to fraction form
    642,539.06/886,709.14 = 356,063.93/x
  3. Step 3: Cross multiply
    642,539.06x = 886,709.14 × 356,063.93
  4. Step 4: Simplify right side
    642,539.06x = 315,725,136,721.78
  5. Step 5: Solve for x
    x = 315,725,136,721.78/642,539.06
  6. Step 6: Final answer
    x = 491,371.12

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