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Finding the Fourth Proportional to 513,644.40, 770,466.60 and 494,290.80

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Solution

The fourth proportional to 513,644.40, 770,466.60 and 494,290.80 is: 741,436.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,644.40 : 770,466.60 = 494,290.80 : x
  2. Step 2: Convert to fraction form
    513,644.40/770,466.60 = 494,290.80/x
  3. Step 3: Cross multiply
    513,644.40x = 770,466.60 × 494,290.80
  4. Step 4: Simplify right side
    513,644.40x = 380,834,552,087.28
  5. Step 5: Solve for x
    x = 380,834,552,087.28/513,644.40
  6. Step 6: Final answer
    x = 741,436.20

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Similar ratio
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1.5x scale

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.