Home / 1,189,232.72-1,784,121.60-515,427.20

Finding the Fourth Proportional to 1,189,232.72, 1,784,121.60 and 515,427.20

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Solution

The fourth proportional to 1,189,232.72, 1,784,121.60 and 515,427.20 is: 773,258.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,232.72 : 1,784,121.60 = 515,427.20 : x
  2. Step 2: Convert to fraction form
    1,189,232.72/1,784,121.60 = 515,427.20/x
  3. Step 3: Cross multiply
    1,189,232.72x = 1,784,121.60 × 515,427.20
  4. Step 4: Simplify right side
    1,189,232.72x = 919,584,800,747.52
  5. Step 5: Solve for x
    x = 919,584,800,747.52/1,189,232.72
  6. Step 6: Final answer
    x = 773,258.91

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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.