Home / 930,659.80-1,395,989.70-611,795.20

Finding the Fourth Proportional to 930,659.80, 1,395,989.70 and 611,795.20

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Solution

The fourth proportional to 930,659.80, 1,395,989.70 and 611,795.20 is: 917,692.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    930,659.80 : 1,395,989.70 = 611,795.20 : x
  2. Step 2: Convert to fraction form
    930,659.80/1,395,989.70 = 611,795.20/x
  3. Step 3: Cross multiply
    930,659.80x = 1,395,989.70 × 611,795.20
  4. Step 4: Simplify right side
    930,659.80x = 854,059,797,709.44
  5. Step 5: Solve for x
    x = 854,059,797,709.44/930,659.80
  6. Step 6: Final answer
    x = 917,692.80

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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.