Home / 812,261.70-1,218,376.20-279,770.94

Finding the Fourth Proportional to 812,261.70, 1,218,376.20 and 279,770.94

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Solution

The fourth proportional to 812,261.70, 1,218,376.20 and 279,770.94 is: 419,650.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,261.70 : 1,218,376.20 = 279,770.94 : x
  2. Step 2: Convert to fraction form
    812,261.70/1,218,376.20 = 279,770.94/x
  3. Step 3: Cross multiply
    812,261.70x = 1,218,376.20 × 279,770.94
  4. Step 4: Simplify right side
    812,261.70x = 340,866,254,747.63
  5. Step 5: Solve for x
    x = 340,866,254,747.63/812,261.70
  6. Step 6: Final answer
    x = 419,650.78

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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.