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Finding the Fourth Proportional to 521,895.47, 720,203.54 and 307,049.36

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Solution

The fourth proportional to 521,895.47, 720,203.54 and 307,049.36 is: 423,720.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,895.47 : 720,203.54 = 307,049.36 : x
  2. Step 2: Convert to fraction form
    521,895.47/720,203.54 = 307,049.36/x
  3. Step 3: Cross multiply
    521,895.47x = 720,203.54 × 307,049.36
  4. Step 4: Simplify right side
    521,895.47x = 221,138,030,890.47
  5. Step 5: Solve for x
    x = 221,138,030,890.47/521,895.47
  6. Step 6: Final answer
    x = 423,720.93

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