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Finding the Fourth Proportional to 489,318.70, 733,978.06 and 489,318.70

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Solution

The fourth proportional to 489,318.70, 733,978.06 and 489,318.70 is: 733,978.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,318.70 : 733,978.06 = 489,318.70 : x
  2. Step 2: Convert to fraction form
    489,318.70/733,978.06 = 489,318.70/x
  3. Step 3: Cross multiply
    489,318.70x = 733,978.06 × 489,318.70
  4. Step 4: Simplify right side
    489,318.70x = 359,149,190,147.72
  5. Step 5: Solve for x
    x = 359,149,190,147.72/489,318.70
  6. Step 6: Final answer
    x = 733,978.06

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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.