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Finding the Fourth Proportional to 489,634.62, 733,762.44 and 389,349.78

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Solution

The fourth proportional to 489,634.62, 733,762.44 and 389,349.78 is: 583,476.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,634.62 : 733,762.44 = 389,349.78 : x
  2. Step 2: Convert to fraction form
    489,634.62/733,762.44 = 389,349.78/x
  3. Step 3: Cross multiply
    489,634.62x = 733,762.44 × 389,349.78
  4. Step 4: Simplify right side
    489,634.62x = 285,690,244,586.26
  5. Step 5: Solve for x
    x = 285,690,244,586.26/489,634.62
  6. Step 6: Final answer
    x = 583,476.40

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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.