Home / 447,729.66-668,318.72-394,587.18

Finding the Fourth Proportional to 447,729.66, 668,318.72 and 394,587.18

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Solution

The fourth proportional to 447,729.66, 668,318.72 and 394,587.18 is: 588,993.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,729.66 : 668,318.72 = 394,587.18 : x
  2. Step 2: Convert to fraction form
    447,729.66/668,318.72 = 394,587.18/x
  3. Step 3: Cross multiply
    447,729.66x = 668,318.72 × 394,587.18
  4. Step 4: Simplify right side
    447,729.66x = 263,709,997,093.07
  5. Step 5: Solve for x
    x = 263,709,997,093.07/447,729.66
  6. Step 6: Final answer
    x = 588,993.81

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.