Home / 861,623.29-1,291,836.43-381,589.51

Finding the Fourth Proportional to 861,623.29, 1,291,836.43 and 381,589.51

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Solution

The fourth proportional to 861,623.29, 1,291,836.43 and 381,589.51 is: 572,119.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,623.29 : 1,291,836.43 = 381,589.51 : x
  2. Step 2: Convert to fraction form
    861,623.29/1,291,836.43 = 381,589.51/x
  3. Step 3: Cross multiply
    861,623.29x = 1,291,836.43 × 381,589.51
  4. Step 4: Simplify right side
    861,623.29x = 492,951,230,323.85
  5. Step 5: Solve for x
    x = 492,951,230,323.85/861,623.29
  6. Step 6: Final answer
    x = 572,119.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.