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Finding the Fourth Proportional to 621,258.40, 929,737.20 and 372,119.20

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Solution

The fourth proportional to 621,258.40, 929,737.20 and 372,119.20 is: 556,890.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,258.40 : 929,737.20 = 372,119.20 : x
  2. Step 2: Convert to fraction form
    621,258.40/929,737.20 = 372,119.20/x
  3. Step 3: Cross multiply
    621,258.40x = 929,737.20 × 372,119.20
  4. Step 4: Simplify right side
    621,258.40x = 345,973,063,074.24
  5. Step 5: Solve for x
    x = 345,973,063,074.24/621,258.40
  6. Step 6: Final answer
    x = 556,890.76

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