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Finding the Fourth Proportional to 401,821.60, 602,732.40 and 313,141.60

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Solution

The fourth proportional to 401,821.60, 602,732.40 and 313,141.60 is: 469,712.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,821.60 : 602,732.40 = 313,141.60 : x
  2. Step 2: Convert to fraction form
    401,821.60/602,732.40 = 313,141.60/x
  3. Step 3: Cross multiply
    401,821.60x = 602,732.40 × 313,141.60
  4. Step 4: Simplify right side
    401,821.60x = 188,740,588,107.84
  5. Step 5: Solve for x
    x = 188,740,588,107.84/401,821.60
  6. Step 6: Final answer
    x = 469,712.40

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