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Finding the Fourth Proportional to 713,137.42, 984,137.34 and 390,840.58

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Solution

The fourth proportional to 713,137.42, 984,137.34 and 390,840.58 is: 539,364.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,137.42 : 984,137.34 = 390,840.58 : x
  2. Step 2: Convert to fraction form
    713,137.42/984,137.34 = 390,840.58/x
  3. Step 3: Cross multiply
    713,137.42x = 984,137.34 × 390,840.58
  4. Step 4: Simplify right side
    713,137.42x = 384,640,808,765.26
  5. Step 5: Solve for x
    x = 384,640,808,765.26/713,137.42
  6. Step 6: Final answer
    x = 539,364.22

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