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Finding the Fourth Proportional to 870,601.77, 1,305,640.22 and 309,602.25

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Solution

The fourth proportional to 870,601.77, 1,305,640.22 and 309,602.25 is: 464,310.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,601.77 : 1,305,640.22 = 309,602.25 : x
  2. Step 2: Convert to fraction form
    870,601.77/1,305,640.22 = 309,602.25/x
  3. Step 3: Cross multiply
    870,601.77x = 1,305,640.22 × 309,602.25
  4. Step 4: Simplify right side
    870,601.77x = 404,229,148,254.48
  5. Step 5: Solve for x
    x = 404,229,148,254.48/870,601.77
  6. Step 6: Final answer
    x = 464,310.05

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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.