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Finding the Fourth Proportional to 978,115.65, 1,366,562.55 and 978,115.65

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Solution

The fourth proportional to 978,115.65, 1,366,562.55 and 978,115.65 is: 1,366,562.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,115.65 : 1,366,562.55 = 978,115.65 : x
  2. Step 2: Convert to fraction form
    978,115.65/1,366,562.55 = 978,115.65/x
  3. Step 3: Cross multiply
    978,115.65x = 1,366,562.55 × 978,115.65
  4. Step 4: Simplify right side
    978,115.65x = 1,336,656,216,858.91
  5. Step 5: Solve for x
    x = 1,336,656,216,858.91/978,115.65
  6. Step 6: Final answer
    x = 1,366,562.55

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Why These Related Problems?

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