Home / 839,862.10-1,259,793.15-278,896.60

Finding the Fourth Proportional to 839,862.10, 1,259,793.15 and 278,896.60

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Solution

The fourth proportional to 839,862.10, 1,259,793.15 and 278,896.60 is: 418,344.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,862.10 : 1,259,793.15 = 278,896.60 : x
  2. Step 2: Convert to fraction form
    839,862.10/1,259,793.15 = 278,896.60/x
  3. Step 3: Cross multiply
    839,862.10x = 1,259,793.15 × 278,896.60
  4. Step 4: Simplify right side
    839,862.10x = 351,352,026,238.29
  5. Step 5: Solve for x
    x = 351,352,026,238.29/839,862.10
  6. Step 6: Final answer
    x = 418,344.90

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Double scale
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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.