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Finding the Fourth Proportional to 513,646.40, 770,469.60 and 494,292.80

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Solution

The fourth proportional to 513,646.40, 770,469.60 and 494,292.80 is: 741,439.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,646.40 : 770,469.60 = 494,292.80 : x
  2. Step 2: Convert to fraction form
    513,646.40/770,469.60 = 494,292.80/x
  3. Step 3: Cross multiply
    513,646.40x = 770,469.60 × 494,292.80
  4. Step 4: Simplify right side
    513,646.40x = 380,837,575,898.88
  5. Step 5: Solve for x
    x = 380,837,575,898.88/513,646.40
  6. Step 6: Final answer
    x = 741,439.20

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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.