Home / 802,721.88-1,107,743.31-440,148.78

Finding the Fourth Proportional to 802,721.88, 1,107,743.31 and 440,148.78

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Solution

The fourth proportional to 802,721.88, 1,107,743.31 and 440,148.78 is: 607,398.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    802,721.88 : 1,107,743.31 = 440,148.78 : x
  2. Step 2: Convert to fraction form
    802,721.88/1,107,743.31 = 440,148.78/x
  3. Step 3: Cross multiply
    802,721.88x = 1,107,743.31 × 440,148.78
  4. Step 4: Simplify right side
    802,721.88x = 487,571,866,449.66
  5. Step 5: Solve for x
    x = 487,571,866,449.66/802,721.88
  6. Step 6: Final answer
    x = 607,398.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.