Home / 1,230,190.80-1,845,286.20-911,326.20

Finding the Fourth Proportional to 1,230,190.80, 1,845,286.20 and 911,326.20

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Solution

The fourth proportional to 1,230,190.80, 1,845,286.20 and 911,326.20 is: 1,366,989.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,190.80 : 1,845,286.20 = 911,326.20 : x
  2. Step 2: Convert to fraction form
    1,230,190.80/1,845,286.20 = 911,326.20/x
  3. Step 3: Cross multiply
    1,230,190.80x = 1,845,286.20 × 911,326.20
  4. Step 4: Simplify right side
    1,230,190.80x = 1,681,657,660,558.44
  5. Step 5: Solve for x
    x = 1,681,657,660,558.44/1,230,190.80
  6. Step 6: Final answer
    x = 1,366,989.30

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Double scale
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Similar ratio
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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.