Home / 825,530.60-1,238,380.68-285,786.02

Finding the Fourth Proportional to 825,530.60, 1,238,380.68 and 285,786.02

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Solution

The fourth proportional to 825,530.60, 1,238,380.68 and 285,786.02 is: 428,708.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,530.60 : 1,238,380.68 = 285,786.02 : x
  2. Step 2: Convert to fraction form
    825,530.60/1,238,380.68 = 285,786.02/x
  3. Step 3: Cross multiply
    825,530.60x = 1,238,380.68 × 285,786.02
  4. Step 4: Simplify right side
    825,530.60x = 353,911,885,782.09
  5. Step 5: Solve for x
    x = 353,911,885,782.09/825,530.60
  6. Step 6: Final answer
    x = 428,708.38

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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.