Home / 685,846.58-1,029,433.86-331,109.51

Finding the Fourth Proportional to 685,846.58, 1,029,433.86 and 331,109.51

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Solution

The fourth proportional to 685,846.58, 1,029,433.86 and 331,109.51 is: 496,984.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,846.58 : 1,029,433.86 = 331,109.51 : x
  2. Step 2: Convert to fraction form
    685,846.58/1,029,433.86 = 331,109.51/x
  3. Step 3: Cross multiply
    685,846.58x = 1,029,433.86 × 331,109.51
  4. Step 4: Simplify right side
    685,846.58x = 340,855,335,814.84
  5. Step 5: Solve for x
    x = 340,855,335,814.84/685,846.58
  6. Step 6: Final answer
    x = 496,984.82

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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.