Home / 825,660.61-1,238,575.93-285,915.84

Finding the Fourth Proportional to 825,660.61, 1,238,575.93 and 285,915.84

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Solution

The fourth proportional to 825,660.61, 1,238,575.93 and 285,915.84 is: 428,903.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,660.61 : 1,238,575.93 = 285,915.84 : x
  2. Step 2: Convert to fraction form
    825,660.61/1,238,575.93 = 285,915.84/x
  3. Step 3: Cross multiply
    825,660.61x = 1,238,575.93 × 285,915.84
  4. Step 4: Simplify right side
    825,660.61x = 354,128,477,429.73
  5. Step 5: Solve for x
    x = 354,128,477,429.73/825,660.61
  6. Step 6: Final answer
    x = 428,903.20

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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.