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Finding the Fourth Proportional to 494,632.55, 742,065.80 and 393,811.85

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Solution

The fourth proportional to 494,632.55, 742,065.80 and 393,811.85 is: 590,810.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,632.55 : 742,065.80 = 393,811.85 : x
  2. Step 2: Convert to fraction form
    494,632.55/742,065.80 = 393,811.85/x
  3. Step 3: Cross multiply
    494,632.55x = 742,065.80 × 393,811.85
  4. Step 4: Simplify right side
    494,632.55x = 292,234,305,519.73
  5. Step 5: Solve for x
    x = 292,234,305,519.73/494,632.55
  6. Step 6: Final answer
    x = 590,810.91

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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.