Home / 2,638,934,129.80-3,958,401,194.70-1,085,709,233.80

Finding the Fourth Proportional to 2,638,934,129.80, 3,958,401,194.70 and 1,085,709,233.80

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Solution

The fourth proportional to 2,638,934,129.80, 3,958,401,194.70 and 1,085,709,233.80 is: 1,628,563,850.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,638,934,129.80 : 3,958,401,194.70 = 1,085,709,233.80 : x
  2. Step 2: Convert to fraction form
    2,638,934,129.80/3,958,401,194.70 = 1,085,709,233.80/x
  3. Step 3: Cross multiply
    2,638,934,129.80x = 3,958,401,194.70 × 1,085,709,233.80
  4. Step 4: Simplify right side
    2,638,934,129.80x = 4,297,672,728,170,741,248
  5. Step 5: Solve for x
    x = 4,297,672,728,170,741,248/2,638,934,129.80
  6. Step 6: Final answer
    x = 1,628,563,850.70

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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.