Home / 825,712.96-1,238,272.30-285,822.55

Finding the Fourth Proportional to 825,712.96, 1,238,272.30 and 285,822.55

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Solution

The fourth proportional to 825,712.96, 1,238,272.30 and 285,822.55 is: 428,630.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,712.96 : 1,238,272.30 = 285,822.55 : x
  2. Step 2: Convert to fraction form
    825,712.96/1,238,272.30 = 285,822.55/x
  3. Step 3: Cross multiply
    825,712.96x = 1,238,272.30 × 285,822.55
  4. Step 4: Simplify right side
    825,712.96x = 353,926,144,475.25
  5. Step 5: Solve for x
    x = 353,926,144,475.25/825,712.96
  6. Step 6: Final answer
    x = 428,630.97

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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.