Home / 1,228,217.20-1,840,576.20-905,853.40

Finding the Fourth Proportional to 1,228,217.20, 1,840,576.20 and 905,853.40

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Solution

The fourth proportional to 1,228,217.20, 1,840,576.20 and 905,853.40 is: 1,357,489.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,228,217.20 : 1,840,576.20 = 905,853.40 : x
  2. Step 2: Convert to fraction form
    1,228,217.20/1,840,576.20 = 905,853.40/x
  3. Step 3: Cross multiply
    1,228,217.20x = 1,840,576.20 × 905,853.40
  4. Step 4: Simplify right side
    1,228,217.20x = 1,667,292,208,729.08
  5. Step 5: Solve for x
    x = 1,667,292,208,729.08/1,228,217.20
  6. Step 6: Final answer
    x = 1,357,489.71

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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.