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Finding the Fourth Proportional to 513,838.70, 770,758.05 and 489,344.30

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Solution

The fourth proportional to 513,838.70, 770,758.05 and 489,344.30 is: 734,016.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,838.70 : 770,758.05 = 489,344.30 : x
  2. Step 2: Convert to fraction form
    513,838.70/770,758.05 = 489,344.30/x
  3. Step 3: Cross multiply
    513,838.70x = 770,758.05 × 489,344.30
  4. Step 4: Simplify right side
    513,838.70x = 377,166,058,446.62
  5. Step 5: Solve for x
    x = 377,166,058,446.62/513,838.70
  6. Step 6: Final answer
    x = 734,016.45

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Similar ratio
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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.