Home / 825,803.22-1,238,407.34-285,912.91

Finding the Fourth Proportional to 825,803.22, 1,238,407.34 and 285,912.91

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Solution

The fourth proportional to 825,803.22, 1,238,407.34 and 285,912.91 is: 428,766.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,803.22 : 1,238,407.34 = 285,912.91 : x
  2. Step 2: Convert to fraction form
    825,803.22/1,238,407.34 = 285,912.91/x
  3. Step 3: Cross multiply
    825,803.22x = 1,238,407.34 × 285,912.91
  4. Step 4: Simplify right side
    825,803.22x = 354,076,646,344.76
  5. Step 5: Solve for x
    x = 354,076,646,344.76/825,803.22
  6. Step 6: Final answer
    x = 428,766.37

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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.