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Finding the Fourth Proportional to 708,803.13, 978,120.97 and 402,919.74

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Solution

The fourth proportional to 708,803.13, 978,120.97 and 402,919.74 is: 556,013.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,803.13 : 978,120.97 = 402,919.74 : x
  2. Step 2: Convert to fraction form
    708,803.13/978,120.97 = 402,919.74/x
  3. Step 3: Cross multiply
    708,803.13x = 978,120.97 × 402,919.74
  4. Step 4: Simplify right side
    708,803.13x = 394,104,246,920.95
  5. Step 5: Solve for x
    x = 394,104,246,920.95/708,803.13
  6. Step 6: Final answer
    x = 556,013.69

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