Home / 478,240.82-659,964.30-263,400.87

Finding the Fourth Proportional to 478,240.82, 659,964.30 and 263,400.87

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Solution

The fourth proportional to 478,240.82, 659,964.30 and 263,400.87 is: 363,488.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,240.82 : 659,964.30 = 263,400.87 : x
  2. Step 2: Convert to fraction form
    478,240.82/659,964.30 = 263,400.87/x
  3. Step 3: Cross multiply
    478,240.82x = 659,964.30 × 263,400.87
  4. Step 4: Simplify right side
    478,240.82x = 173,835,170,788.94
  5. Step 5: Solve for x
    x = 173,835,170,788.94/478,240.82
  6. Step 6: Final answer
    x = 363,488.78

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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.