Home / 870,061,042.82-1,305,078,785.78-215,012,051.44

Finding the Fourth Proportional to 870,061,042.82, 1,305,078,785.78 and 215,012,051.44

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Solution

The fourth proportional to 870,061,042.82, 1,305,078,785.78 and 215,012,051.44 is: 322,514,919.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,061,042.82 : 1,305,078,785.78 = 215,012,051.44 : x
  2. Step 2: Convert to fraction form
    870,061,042.82/1,305,078,785.78 = 215,012,051.44/x
  3. Step 3: Cross multiply
    870,061,042.82x = 1,305,078,785.78 × 215,012,051.44
  4. Step 4: Simplify right side
    870,061,042.82x = 280,607,667,017,044,352
  5. Step 5: Solve for x
    x = 280,607,667,017,044,352/870,061,042.82
  6. Step 6: Final answer
    x = 322,514,919.31

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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.