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Finding the Fourth Proportional to 686,650.21, 947,588.66 and 380,739.49

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Solution

The fourth proportional to 686,650.21, 947,588.66 and 380,739.49 is: 525,426.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,650.21 : 947,588.66 = 380,739.49 : x
  2. Step 2: Convert to fraction form
    686,650.21/947,588.66 = 380,739.49/x
  3. Step 3: Cross multiply
    686,650.21x = 947,588.66 × 380,739.49
  4. Step 4: Simplify right side
    686,650.21x = 360,784,423,138.18
  5. Step 5: Solve for x
    x = 360,784,423,138.18/686,650.21
  6. Step 6: Final answer
    x = 525,426.80

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