Home / 839,698.80-1,259,548.20-278,733.30

Finding the Fourth Proportional to 839,698.80, 1,259,548.20 and 278,733.30

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Solution

The fourth proportional to 839,698.80, 1,259,548.20 and 278,733.30 is: 418,099.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,698.80 : 1,259,548.20 = 278,733.30 : x
  2. Step 2: Convert to fraction form
    839,698.80/1,259,548.20 = 278,733.30/x
  3. Step 3: Cross multiply
    839,698.80x = 1,259,548.20 × 278,733.30
  4. Step 4: Simplify right side
    839,698.80x = 351,078,026,295.06
  5. Step 5: Solve for x
    x = 351,078,026,295.06/839,698.80
  6. Step 6: Final answer
    x = 418,099.95

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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.