Home / 685,645.56-1,029,131.73-330,909.30

Finding the Fourth Proportional to 685,645.56, 1,029,131.73 and 330,909.30

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Solution

The fourth proportional to 685,645.56, 1,029,131.73 and 330,909.30 is: 496,684.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,645.56 : 1,029,131.73 = 330,909.30 : x
  2. Step 2: Convert to fraction form
    685,645.56/1,029,131.73 = 330,909.30/x
  3. Step 3: Cross multiply
    685,645.56x = 1,029,131.73 × 330,909.30
  4. Step 4: Simplify right side
    685,645.56x = 340,549,260,382.09
  5. Step 5: Solve for x
    x = 340,549,260,382.09/685,645.56
  6. Step 6: Final answer
    x = 496,684.12

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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.