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Finding the Fourth Proportional to 712,468.94, 983,210.28 and 390,181.28

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Solution

The fourth proportional to 712,468.94, 983,210.28 and 390,181.28 is: 538,451.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,468.94 : 983,210.28 = 390,181.28 : x
  2. Step 2: Convert to fraction form
    712,468.94/983,210.28 = 390,181.28/x
  3. Step 3: Cross multiply
    712,468.94x = 983,210.28 × 390,181.28
  4. Step 4: Simplify right side
    712,468.94x = 383,630,245,559.56
  5. Step 5: Solve for x
    x = 383,630,245,559.56/712,468.94
  6. Step 6: Final answer
    x = 538,451.89

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