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Finding the Fourth Proportional to 978,403.76, 1,349,940.56 and 564,839.36

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Solution

The fourth proportional to 978,403.76, 1,349,940.56 and 564,839.36 is: 779,330.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,403.76 : 1,349,940.56 = 564,839.36 : x
  2. Step 2: Convert to fraction form
    978,403.76/1,349,940.56 = 564,839.36/x
  3. Step 3: Cross multiply
    978,403.76x = 1,349,940.56 × 564,839.36
  4. Step 4: Simplify right side
    978,403.76x = 762,499,561,948.44
  5. Step 5: Solve for x
    x = 762,499,561,948.44/978,403.76
  6. Step 6: Final answer
    x = 779,330.16

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Why These Related Problems?

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