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Finding the Fourth Proportional to 978,432.20, 1,465,898.70 and 838,464.20

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Solution

The fourth proportional to 978,432.20, 1,465,898.70 and 838,464.20 is: 1,256,196.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,432.20 : 1,465,898.70 = 838,464.20 : x
  2. Step 2: Convert to fraction form
    978,432.20/1,465,898.70 = 838,464.20/x
  3. Step 3: Cross multiply
    978,432.20x = 1,465,898.70 × 838,464.20
  4. Step 4: Simplify right side
    978,432.20x = 1,229,103,580,776.54
  5. Step 5: Solve for x
    x = 1,229,103,580,776.54/978,432.20
  6. Step 6: Final answer
    x = 1,256,196.99

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