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Finding the Fourth Proportional to 489,632.48, 733,759.38 and 389,347.20

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Solution

The fourth proportional to 489,632.48, 733,759.38 and 389,347.20 is: 583,472.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,632.48 : 733,759.38 = 389,347.20 : x
  2. Step 2: Convert to fraction form
    489,632.48/733,759.38 = 389,347.20/x
  3. Step 3: Cross multiply
    489,632.48x = 733,759.38 × 389,347.20
  4. Step 4: Simplify right side
    489,632.48x = 285,687,160,076.74
  5. Step 5: Solve for x
    x = 285,687,160,076.74/489,632.48
  6. Step 6: Final answer
    x = 583,472.65

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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.