Home / 825,433.34-1,238,234.85-285,688.55

Finding the Fourth Proportional to 825,433.34, 1,238,234.85 and 285,688.55

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Solution

The fourth proportional to 825,433.34, 1,238,234.85 and 285,688.55 is: 428,562.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,433.34 : 1,238,234.85 = 285,688.55 : x
  2. Step 2: Convert to fraction form
    825,433.34/1,238,234.85 = 285,688.55/x
  3. Step 3: Cross multiply
    825,433.34x = 1,238,234.85 × 285,688.55
  4. Step 4: Simplify right side
    825,433.34x = 353,749,521,951.56
  5. Step 5: Solve for x
    x = 353,749,521,951.56/825,433.34
  6. Step 6: Final answer
    x = 428,562.20

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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.