Home / 668,290.72-1,002,104.44-212,822.60

Finding the Fourth Proportional to 668,290.72, 1,002,104.44 and 212,822.60

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Solution

The fourth proportional to 668,290.72, 1,002,104.44 and 212,822.60 is: 319,128.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,290.72 : 1,002,104.44 = 212,822.60 : x
  2. Step 2: Convert to fraction form
    668,290.72/1,002,104.44 = 212,822.60/x
  3. Step 3: Cross multiply
    668,290.72x = 1,002,104.44 × 212,822.60
  4. Step 4: Simplify right side
    668,290.72x = 213,270,472,392.34
  5. Step 5: Solve for x
    x = 213,270,472,392.34/668,290.72
  6. Step 6: Final answer
    x = 319,128.29

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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.