Home / 513,659,613.40-770,489,420.10-329,993,603.80

Finding the Fourth Proportional to 513,659,613.40, 770,489,420.10 and 329,993,603.80

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Solution

The fourth proportional to 513,659,613.40, 770,489,420.10 and 329,993,603.80 is: 494,990,405.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,659,613.40 : 770,489,420.10 = 329,993,603.80 : x
  2. Step 2: Convert to fraction form
    513,659,613.40/770,489,420.10 = 329,993,603.80/x
  3. Step 3: Cross multiply
    513,659,613.40x = 770,489,420.10 × 329,993,603.80
  4. Step 4: Simplify right side
    513,659,613.40x = 254,256,580,428,571,168
  5. Step 5: Solve for x
    x = 254,256,580,428,571,168/513,659,613.40
  6. Step 6: Final answer
    x = 494,990,405.70

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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.