Home / 766,720.77-1,058,081.81-422,568.97

Finding the Fourth Proportional to 766,720.77, 1,058,081.81 and 422,568.97

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Solution

The fourth proportional to 766,720.77, 1,058,081.81 and 422,568.97 is: 583,149.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,720.77 : 1,058,081.81 = 422,568.97 : x
  2. Step 2: Convert to fraction form
    766,720.77/1,058,081.81 = 422,568.97/x
  3. Step 3: Cross multiply
    766,720.77x = 1,058,081.81 × 422,568.97
  4. Step 4: Simplify right side
    766,720.77x = 447,112,540,627.44
  5. Step 5: Solve for x
    x = 447,112,540,627.44/766,720.77
  6. Step 6: Final answer
    x = 583,149.12

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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.