Home / 665,965.12-998,781.38-261,239.58

Finding the Fourth Proportional to 665,965.12, 998,781.38 and 261,239.58

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Solution

The fourth proportional to 665,965.12, 998,781.38 and 261,239.58 is: 391,794.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,965.12 : 998,781.38 = 261,239.58 : x
  2. Step 2: Convert to fraction form
    665,965.12/998,781.38 = 261,239.58/x
  3. Step 3: Cross multiply
    665,965.12x = 998,781.38 × 261,239.58
  4. Step 4: Simplify right side
    665,965.12x = 260,921,228,223.02
  5. Step 5: Solve for x
    x = 260,921,228,223.02/665,965.12
  6. Step 6: Final answer
    x = 391,794.14

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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.