Home / 870,061,037.96-1,305,078,778.46-215,012,046.56

Finding the Fourth Proportional to 870,061,037.96, 1,305,078,778.46 and 215,012,046.56

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Solution

The fourth proportional to 870,061,037.96, 1,305,078,778.46 and 215,012,046.56 is: 322,514,911.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,061,037.96 : 1,305,078,778.46 = 215,012,046.56 : x
  2. Step 2: Convert to fraction form
    870,061,037.96/1,305,078,778.46 = 215,012,046.56/x
  3. Step 3: Cross multiply
    870,061,037.96x = 1,305,078,778.46 × 215,012,046.56
  4. Step 4: Simplify right side
    870,061,037.96x = 280,607,659,078,709,472
  5. Step 5: Solve for x
    x = 280,607,659,078,709,472/870,061,037.96
  6. Step 6: Final answer
    x = 322,514,911.98

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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.