Home / 1,121,964.72-1,682,947.05-280,516.47

Finding the Fourth Proportional to 1,121,964.72, 1,682,947.05 and 280,516.47

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Solution

The fourth proportional to 1,121,964.72, 1,682,947.05 and 280,516.47 is: 420,774.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,964.72 : 1,682,947.05 = 280,516.47 : x
  2. Step 2: Convert to fraction form
    1,121,964.72/1,682,947.05 = 280,516.47/x
  3. Step 3: Cross multiply
    1,121,964.72x = 1,682,947.05 × 280,516.47
  4. Step 4: Simplify right side
    1,121,964.72x = 472,094,365,662.91
  5. Step 5: Solve for x
    x = 472,094,365,662.91/1,121,964.72
  6. Step 6: Final answer
    x = 420,774.70

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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.