Home / 780,114.45-1,170,171.68-189,138.45

Finding the Fourth Proportional to 780,114.45, 1,170,171.68 and 189,138.45

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Solution

The fourth proportional to 780,114.45, 1,170,171.68 and 189,138.45 is: 283,707.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,114.45 : 1,170,171.68 = 189,138.45 : x
  2. Step 2: Convert to fraction form
    780,114.45/1,170,171.68 = 189,138.45/x
  3. Step 3: Cross multiply
    780,114.45x = 1,170,171.68 × 189,138.45
  4. Step 4: Simplify right side
    780,114.45x = 221,324,456,843.40
  5. Step 5: Solve for x
    x = 221,324,456,843.40/780,114.45
  6. Step 6: Final answer
    x = 283,707.68

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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.