Home / 1,186,871.76-1,780,587.72-388,150.20

Finding the Fourth Proportional to 1,186,871.76, 1,780,587.72 and 388,150.20

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Solution

The fourth proportional to 1,186,871.76, 1,780,587.72 and 388,150.20 is: 582,316.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,871.76 : 1,780,587.72 = 388,150.20 : x
  2. Step 2: Convert to fraction form
    1,186,871.76/1,780,587.72 = 388,150.20/x
  3. Step 3: Cross multiply
    1,186,871.76x = 1,780,587.72 × 388,150.20
  4. Step 4: Simplify right side
    1,186,871.76x = 691,135,479,635.54
  5. Step 5: Solve for x
    x = 691,135,479,635.54/1,186,871.76
  6. Step 6: Final answer
    x = 582,316.90

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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.