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Finding the Fourth Proportional to 658,245.96, 987,726.15 and 279,379.80

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Solution

The fourth proportional to 658,245.96, 987,726.15 and 279,379.80 is: 419,221.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,245.96 : 987,726.15 = 279,379.80 : x
  2. Step 2: Convert to fraction form
    658,245.96/987,726.15 = 279,379.80/x
  3. Step 3: Cross multiply
    658,245.96x = 987,726.15 × 279,379.80
  4. Step 4: Simplify right side
    658,245.96x = 275,950,734,241.77
  5. Step 5: Solve for x
    x = 275,950,734,241.77/658,245.96
  6. Step 6: Final answer
    x = 419,221.31

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1.5x scale

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.