Home / 1,126,664.88-1,690,000.20-285,216.72

Finding the Fourth Proportional to 1,126,664.88, 1,690,000.20 and 285,216.72

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Solution

The fourth proportional to 1,126,664.88, 1,690,000.20 and 285,216.72 is: 427,825.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126,664.88 : 1,690,000.20 = 285,216.72 : x
  2. Step 2: Convert to fraction form
    1,126,664.88/1,690,000.20 = 285,216.72/x
  3. Step 3: Cross multiply
    1,126,664.88x = 1,690,000.20 × 285,216.72
  4. Step 4: Simplify right side
    1,126,664.88x = 482,016,313,843.34
  5. Step 5: Solve for x
    x = 482,016,313,843.34/1,126,664.88
  6. Step 6: Final answer
    x = 427,825.81

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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.