Home / 765,015.36-1,055,687.82-420,829.47

Finding the Fourth Proportional to 765,015.36, 1,055,687.82 and 420,829.47

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Solution

The fourth proportional to 765,015.36, 1,055,687.82 and 420,829.47 is: 580,726.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,015.36 : 1,055,687.82 = 420,829.47 : x
  2. Step 2: Convert to fraction form
    765,015.36/1,055,687.82 = 420,829.47/x
  3. Step 3: Cross multiply
    765,015.36x = 1,055,687.82 × 420,829.47
  4. Step 4: Simplify right side
    765,015.36x = 444,264,545,776.06
  5. Step 5: Solve for x
    x = 444,264,545,776.06/765,015.36
  6. Step 6: Final answer
    x = 580,726.31

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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.