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Finding the Fourth Proportional to 978,143.90, 1,366,602.10 and 978,143.90

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Solution

The fourth proportional to 978,143.90, 1,366,602.10 and 978,143.90 is: 1,366,602.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,143.90 : 1,366,602.10 = 978,143.90 : x
  2. Step 2: Convert to fraction form
    978,143.90/1,366,602.10 = 978,143.90/x
  3. Step 3: Cross multiply
    978,143.90x = 1,366,602.10 × 978,143.90
  4. Step 4: Simplify right side
    978,143.90x = 1,336,733,507,842.19
  5. Step 5: Solve for x
    x = 1,336,733,507,842.19/978,143.90
  6. Step 6: Final answer
    x = 1,366,602.10

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