Home / 668,286.72-1,002,098.43-212,818.59

Finding the Fourth Proportional to 668,286.72, 1,002,098.43 and 212,818.59

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Solution

The fourth proportional to 668,286.72, 1,002,098.43 and 212,818.59 is: 319,122.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,286.72 : 1,002,098.43 = 212,818.59 : x
  2. Step 2: Convert to fraction form
    668,286.72/1,002,098.43 = 212,818.59/x
  3. Step 3: Cross multiply
    668,286.72x = 1,002,098.43 × 212,818.59
  4. Step 4: Simplify right side
    668,286.72x = 213,265,174,913.81
  5. Step 5: Solve for x
    x = 213,265,174,913.81/668,286.72
  6. Step 6: Final answer
    x = 319,122.27

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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.