Home / 892,213,142.69-1,231,180,131.82-490,305,758.61

Finding the Fourth Proportional to 892,213,142.69, 1,231,180,131.82 and 490,305,758.61

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Solution

The fourth proportional to 892,213,142.69, 1,231,180,131.82 and 490,305,758.61 is: 676,581,278.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    892,213,142.69 : 1,231,180,131.82 = 490,305,758.61 : x
  2. Step 2: Convert to fraction form
    892,213,142.69/1,231,180,131.82 = 490,305,758.61/x
  3. Step 3: Cross multiply
    892,213,142.69x = 1,231,180,131.82 × 490,305,758.61
  4. Step 4: Simplify right side
    892,213,142.69x = 603,654,708,517,564,928
  5. Step 5: Solve for x
    x = 603,654,708,517,564,928/892,213,142.69
  6. Step 6: Final answer
    x = 676,581,278.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.