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Finding the Fourth Proportional to 354,777.01, 531,408.90 and 287,018.28

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Solution

The fourth proportional to 354,777.01, 531,408.90 and 287,018.28 is: 429,915.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,777.01 : 531,408.90 = 287,018.28 : x
  2. Step 2: Convert to fraction form
    354,777.01/531,408.90 = 287,018.28/x
  3. Step 3: Cross multiply
    354,777.01x = 531,408.90 × 287,018.28
  4. Step 4: Simplify right side
    354,777.01x = 152,524,068,454.69
  5. Step 5: Solve for x
    x = 152,524,068,454.69/354,777.01
  6. Step 6: Final answer
    x = 429,915.31

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