Home / 644,486.75-966,723.96-391,836.98

Finding the Fourth Proportional to 644,486.75, 966,723.96 and 391,836.98

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Solution

The fourth proportional to 644,486.75, 966,723.96 and 391,836.98 is: 587,751.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,486.75 : 966,723.96 = 391,836.98 : x
  2. Step 2: Convert to fraction form
    644,486.75/966,723.96 = 391,836.98/x
  3. Step 3: Cross multiply
    644,486.75x = 966,723.96 × 391,836.98
  4. Step 4: Simplify right side
    644,486.75x = 378,798,199,396.85
  5. Step 5: Solve for x
    x = 378,798,199,396.85/644,486.75
  6. Step 6: Final answer
    x = 587,751.73

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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.