Home / 667,638.72-1,001,615.64-218,357.88

Finding the Fourth Proportional to 667,638.72, 1,001,615.64 and 218,357.88

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Solution

The fourth proportional to 667,638.72, 1,001,615.64 and 218,357.88 is: 327,588.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,638.72 : 1,001,615.64 = 218,357.88 : x
  2. Step 2: Convert to fraction form
    667,638.72/1,001,615.64 = 218,357.88/x
  3. Step 3: Cross multiply
    667,638.72x = 1,001,615.64 × 218,357.88
  4. Step 4: Simplify right side
    667,638.72x = 218,710,667,725.24
  5. Step 5: Solve for x
    x = 218,710,667,725.24/667,638.72
  6. Step 6: Final answer
    x = 327,588.35

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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.