Home / 870,497.28-1,305,989.76-309,588.48

Finding the Fourth Proportional to 870,497.28, 1,305,989.76 and 309,588.48

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Solution

The fourth proportional to 870,497.28, 1,305,989.76 and 309,588.48 is: 464,469.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,497.28 : 1,305,989.76 = 309,588.48 : x
  2. Step 2: Convert to fraction form
    870,497.28/1,305,989.76 = 309,588.48/x
  3. Step 3: Cross multiply
    870,497.28x = 1,305,989.76 × 309,588.48
  4. Step 4: Simplify right side
    870,497.28x = 404,319,384,693.97
  5. Step 5: Solve for x
    x = 404,319,384,693.97/870,497.28
  6. Step 6: Final answer
    x = 464,469.44

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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.