Home / 515,183.82-772,998.21-278,692.98

Finding the Fourth Proportional to 515,183.82, 772,998.21 and 278,692.98

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Solution

The fourth proportional to 515,183.82, 772,998.21 and 278,692.98 is: 418,159.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,183.82 : 772,998.21 = 278,692.98 : x
  2. Step 2: Convert to fraction form
    515,183.82/772,998.21 = 278,692.98/x
  3. Step 3: Cross multiply
    515,183.82x = 772,998.21 × 278,692.98
  4. Step 4: Simplify right side
    515,183.82x = 215,429,174,679.57
  5. Step 5: Solve for x
    x = 215,429,174,679.57/515,183.82
  6. Step 6: Final answer
    x = 418,159.82

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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.