Home / 667,761.40-921,829.92-381,226.14

Finding the Fourth Proportional to 667,761.40, 921,829.92 and 381,226.14

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Solution

The fourth proportional to 667,761.40, 921,829.92 and 381,226.14 is: 526,274.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,761.40 : 921,829.92 = 381,226.14 : x
  2. Step 2: Convert to fraction form
    667,761.40/921,829.92 = 381,226.14/x
  3. Step 3: Cross multiply
    667,761.40x = 921,829.92 × 381,226.14
  4. Step 4: Simplify right side
    667,761.40x = 351,425,662,138.11
  5. Step 5: Solve for x
    x = 351,425,662,138.11/667,761.40
  6. Step 6: Final answer
    x = 526,274.30

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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.