Home / 667,747.35-921,538.11-377,385.74

Finding the Fourth Proportional to 667,747.35, 921,538.11 and 377,385.74

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Solution

The fourth proportional to 667,747.35, 921,538.11 and 377,385.74 is: 520,818.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,747.35 : 921,538.11 = 377,385.74 : x
  2. Step 2: Convert to fraction form
    667,747.35/921,538.11 = 377,385.74/x
  3. Step 3: Cross multiply
    667,747.35x = 921,538.11 × 377,385.74
  4. Step 4: Simplify right side
    667,747.35x = 347,775,340,103.65
  5. Step 5: Solve for x
    x = 347,775,340,103.65/667,747.35
  6. Step 6: Final answer
    x = 520,818.75

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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.