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Finding the Fourth Proportional to 419,486.36, 628,986.54 and 286,527.29

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Solution

The fourth proportional to 419,486.36, 628,986.54 and 286,527.29 is: 429,624.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,486.36 : 628,986.54 = 286,527.29 : x
  2. Step 2: Convert to fraction form
    419,486.36/628,986.54 = 286,527.29/x
  3. Step 3: Cross multiply
    419,486.36x = 628,986.54 × 286,527.29
  4. Step 4: Simplify right side
    419,486.36x = 180,221,808,752.68
  5. Step 5: Solve for x
    x = 180,221,808,752.68/419,486.36
  6. Step 6: Final answer
    x = 429,624.96

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