Home / 766,690.58-1,058,040.21-422,538.90

Finding the Fourth Proportional to 766,690.58, 1,058,040.21 and 422,538.90

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Solution

The fourth proportional to 766,690.58, 1,058,040.21 and 422,538.90 is: 583,107.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,690.58 : 1,058,040.21 = 422,538.90 : x
  2. Step 2: Convert to fraction form
    766,690.58/1,058,040.21 = 422,538.90/x
  3. Step 3: Cross multiply
    766,690.58x = 1,058,040.21 × 422,538.90
  4. Step 4: Simplify right side
    766,690.58x = 447,063,146,489.17
  5. Step 5: Solve for x
    x = 447,063,146,489.17/766,690.58
  6. Step 6: Final answer
    x = 583,107.66

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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.