Home / 807,422,751.70-1,211,700,997.95-347,690,857.30

Finding the Fourth Proportional to 807,422,751.70, 1,211,700,997.95 and 347,690,857.30

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Solution

The fourth proportional to 807,422,751.70, 1,211,700,997.95 and 347,690,857.30 is: 521,780,390.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,422,751.70 : 1,211,700,997.95 = 347,690,857.30 : x
  2. Step 2: Convert to fraction form
    807,422,751.70/1,211,700,997.95 = 347,690,857.30/x
  3. Step 3: Cross multiply
    807,422,751.70x = 1,211,700,997.95 × 347,690,857.30
  4. Step 4: Simplify right side
    807,422,751.70x = 421,297,358,768,501,056
  5. Step 5: Solve for x
    x = 421,297,358,768,501,056/807,422,751.70
  6. Step 6: Final answer
    x = 521,780,390.61

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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.