Home / 401,914.40-553,877.31-394,528.22

Finding the Fourth Proportional to 401,914.40, 553,877.31 and 394,528.22

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Solution

The fourth proportional to 401,914.40, 553,877.31 and 394,528.22 is: 543,698.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,914.40 : 553,877.31 = 394,528.22 : x
  2. Step 2: Convert to fraction form
    401,914.40/553,877.31 = 394,528.22/x
  3. Step 3: Cross multiply
    401,914.40x = 553,877.31 × 394,528.22
  4. Step 4: Simplify right side
    401,914.40x = 218,520,229,212.69
  5. Step 5: Solve for x
    x = 218,520,229,212.69/401,914.40
  6. Step 6: Final answer
    x = 543,698.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.