Home / 420,059,676.52-579,667,162.26-231,883,930.76

Finding the Fourth Proportional to 420,059,676.52, 579,667,162.26 and 231,883,930.76

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Solution

The fourth proportional to 420,059,676.52, 579,667,162.26 and 231,883,930.76 is: 319,991,438.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,059,676.52 : 579,667,162.26 = 231,883,930.76 : x
  2. Step 2: Convert to fraction form
    420,059,676.52/579,667,162.26 = 231,883,930.76/x
  3. Step 3: Cross multiply
    420,059,676.52x = 579,667,162.26 × 231,883,930.76
  4. Step 4: Simplify right side
    420,059,676.52x = 134,415,500,117,343,520
  5. Step 5: Solve for x
    x = 134,415,500,117,343,520/420,059,676.52
  6. Step 6: Final answer
    x = 319,991,438.43

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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.