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Finding the Fourth Proportional to 513,847.80, 770,771.70 and 504,990.45

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Solution

The fourth proportional to 513,847.80, 770,771.70 and 504,990.45 is: 757,485.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,847.80 : 770,771.70 = 504,990.45 : x
  2. Step 2: Convert to fraction form
    513,847.80/770,771.70 = 504,990.45/x
  3. Step 3: Cross multiply
    513,847.80x = 770,771.70 × 504,990.45
  4. Step 4: Simplify right side
    513,847.80x = 389,232,347,630.27
  5. Step 5: Solve for x
    x = 389,232,347,630.27/513,847.80
  6. Step 6: Final answer
    x = 757,485.68

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Double scale
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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.