Home / 861,622.80-1,291,835.69-381,589.02

Finding the Fourth Proportional to 861,622.80, 1,291,835.69 and 381,589.02

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Solution

The fourth proportional to 861,622.80, 1,291,835.69 and 381,589.02 is: 572,118.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,622.80 : 1,291,835.69 = 381,589.02 : x
  2. Step 2: Convert to fraction form
    861,622.80/1,291,835.69 = 381,589.02/x
  3. Step 3: Cross multiply
    861,622.80x = 1,291,835.69 × 381,589.02
  4. Step 4: Simplify right side
    861,622.80x = 492,950,306,581.00
  5. Step 5: Solve for x
    x = 492,950,306,581.00/861,622.80
  6. Step 6: Final answer
    x = 572,118.46

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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.