Home / 839,969.40-1,259,954.10-279,003.90

Finding the Fourth Proportional to 839,969.40, 1,259,954.10 and 279,003.90

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Solution

The fourth proportional to 839,969.40, 1,259,954.10 and 279,003.90 is: 418,505.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,969.40 : 1,259,954.10 = 279,003.90 : x
  2. Step 2: Convert to fraction form
    839,969.40/1,259,954.10 = 279,003.90/x
  3. Step 3: Cross multiply
    839,969.40x = 1,259,954.10 × 279,003.90
  4. Step 4: Simplify right side
    839,969.40x = 351,532,107,720.99
  5. Step 5: Solve for x
    x = 351,532,107,720.99/839,969.40
  6. Step 6: Final answer
    x = 418,505.85

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Similar ratio
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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.