Home / 817,589.82-1,128,262.93-455,013.58

Finding the Fourth Proportional to 817,589.82, 1,128,262.93 and 455,013.58

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Solution

The fourth proportional to 817,589.82, 1,128,262.93 and 455,013.58 is: 627,912.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,589.82 : 1,128,262.93 = 455,013.58 : x
  2. Step 2: Convert to fraction form
    817,589.82/1,128,262.93 = 455,013.58/x
  3. Step 3: Cross multiply
    817,589.82x = 1,128,262.93 × 455,013.58
  4. Step 4: Simplify right side
    817,589.82x = 513,374,954,960.59
  5. Step 5: Solve for x
    x = 513,374,954,960.59/817,589.82
  6. Step 6: Final answer
    x = 627,912.61

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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.