Home / 1,189,184.56-1,784,049.20-515,378.88

Finding the Fourth Proportional to 1,189,184.56, 1,784,049.20 and 515,378.88

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Solution

The fourth proportional to 1,189,184.56, 1,784,049.20 and 515,378.88 is: 773,186.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,184.56 : 1,784,049.20 = 515,378.88 : x
  2. Step 2: Convert to fraction form
    1,189,184.56/1,784,049.20 = 515,378.88/x
  3. Step 3: Cross multiply
    1,189,184.56x = 1,784,049.20 × 515,378.88
  4. Step 4: Simplify right side
    1,189,184.56x = 919,461,278,560.90
  5. Step 5: Solve for x
    x = 919,461,278,560.90/1,189,184.56
  6. Step 6: Final answer
    x = 773,186.36

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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.