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Finding the Fourth Proportional to 978,718.81, 1,469,152.06 and 777,607.41

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Solution

The fourth proportional to 978,718.81, 1,469,152.06 and 777,607.41 is: 1,167,264.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,718.81 : 1,469,152.06 = 777,607.41 : x
  2. Step 2: Convert to fraction form
    978,718.81/1,469,152.06 = 777,607.41/x
  3. Step 3: Cross multiply
    978,718.81x = 1,469,152.06 × 777,607.41
  4. Step 4: Simplify right side
    978,718.81x = 1,142,423,528,272.76
  5. Step 5: Solve for x
    x = 1,142,423,528,272.76/978,718.81
  6. Step 6: Final answer
    x = 1,167,264.30

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Why These Related Problems?

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