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Finding the Fourth Proportional to 978,422.70, 1,465,884.45 and 838,454.70

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Solution

The fourth proportional to 978,422.70, 1,465,884.45 and 838,454.70 is: 1,256,182.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,422.70 : 1,465,884.45 = 838,454.70 : x
  2. Step 2: Convert to fraction form
    978,422.70/1,465,884.45 = 838,454.70/x
  3. Step 3: Cross multiply
    978,422.70x = 1,465,884.45 × 838,454.70
  4. Step 4: Simplify right side
    978,422.70x = 1,229,077,706,759.41
  5. Step 5: Solve for x
    x = 1,229,077,706,759.41/978,422.70
  6. Step 6: Final answer
    x = 1,256,182.74

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