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Finding the Fourth Proportional to 670,368.88, 925,407.26 and 398,524.78

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Solution

The fourth proportional to 670,368.88, 925,407.26 and 398,524.78 is: 550,141.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,368.88 : 925,407.26 = 398,524.78 : x
  2. Step 2: Convert to fraction form
    670,368.88/925,407.26 = 398,524.78/x
  3. Step 3: Cross multiply
    670,368.88x = 925,407.26 × 398,524.78
  4. Step 4: Simplify right side
    670,368.88x = 368,797,724,701.90
  5. Step 5: Solve for x
    x = 368,797,724,701.90/670,368.88
  6. Step 6: Final answer
    x = 550,141.48

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