Home / 1,279,605.96-1,919,212.11-426,692.43

Finding the Fourth Proportional to 1,279,605.96, 1,919,212.11 and 426,692.43

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Solution

The fourth proportional to 1,279,605.96, 1,919,212.11 and 426,692.43 is: 639,973.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,605.96 : 1,919,212.11 = 426,692.43 : x
  2. Step 2: Convert to fraction form
    1,279,605.96/1,919,212.11 = 426,692.43/x
  3. Step 3: Cross multiply
    1,279,605.96x = 1,919,212.11 × 426,692.43
  4. Step 4: Simplify right side
    1,279,605.96x = 818,913,278,901.33
  5. Step 5: Solve for x
    x = 818,913,278,901.33/1,279,605.96
  6. Step 6: Final answer
    x = 639,973.01

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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.