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Finding the Fourth Proportional to 697,987.90, 978,511.69 and 697,987.90

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Solution

The fourth proportional to 697,987.90, 978,511.69 and 697,987.90 is: 978,511.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,987.90 : 978,511.69 = 697,987.90 : x
  2. Step 2: Convert to fraction form
    697,987.90/978,511.69 = 697,987.90/x
  3. Step 3: Cross multiply
    697,987.90x = 978,511.69 × 697,987.90
  4. Step 4: Simplify right side
    697,987.90x = 682,989,319,628.55
  5. Step 5: Solve for x
    x = 682,989,319,628.55/697,987.90
  6. Step 6: Final answer
    x = 978,511.69

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Why These Related Problems?

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