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Finding the Fourth Proportional to 401,009,791.80, 601,514,687.70 and 263,260,284.60

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Solution

The fourth proportional to 401,009,791.80, 601,514,687.70 and 263,260,284.60 is: 394,890,426.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,009,791.80 : 601,514,687.70 = 263,260,284.60 : x
  2. Step 2: Convert to fraction form
    401,009,791.80/601,514,687.70 = 263,260,284.60/x
  3. Step 3: Cross multiply
    401,009,791.80x = 601,514,687.70 × 263,260,284.60
  4. Step 4: Simplify right side
    401,009,791.80x = 158,354,927,874,982,144
  5. Step 5: Solve for x
    x = 158,354,927,874,982,144/401,009,791.80
  6. Step 6: Final answer
    x = 394,890,426.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.