Home / 870,061,028.94-1,305,078,764.96-215,012,037.56

Finding the Fourth Proportional to 870,061,028.94, 1,305,078,764.96 and 215,012,037.56

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Solution

The fourth proportional to 870,061,028.94, 1,305,078,764.96 and 215,012,037.56 is: 322,514,898.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,061,028.94 : 1,305,078,764.96 = 215,012,037.56 : x
  2. Step 2: Convert to fraction form
    870,061,028.94/1,305,078,764.96 = 215,012,037.56/x
  3. Step 3: Cross multiply
    870,061,028.94x = 1,305,078,764.96 × 215,012,037.56
  4. Step 4: Simplify right side
    870,061,028.94x = 280,607,644,430,337,952
  5. Step 5: Solve for x
    x = 280,607,644,430,337,952/870,061,028.94
  6. Step 6: Final answer
    x = 322,514,898.49

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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.