Home / 798,042.30-1,197,064.83-639,128.97

Finding the Fourth Proportional to 798,042.30, 1,197,064.83 and 639,128.97

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Solution

The fourth proportional to 798,042.30, 1,197,064.83 and 639,128.97 is: 958,694.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    798,042.30 : 1,197,064.83 = 639,128.97 : x
  2. Step 2: Convert to fraction form
    798,042.30/1,197,064.83 = 639,128.97/x
  3. Step 3: Cross multiply
    798,042.30x = 1,197,064.83 × 639,128.97
  4. Step 4: Simplify right side
    798,042.30x = 765,078,811,821.13
  5. Step 5: Solve for x
    x = 765,078,811,821.13/798,042.30
  6. Step 6: Final answer
    x = 958,694.56

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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.