Home / 685,672.75-1,029,172.51-330,936.49

Finding the Fourth Proportional to 685,672.75, 1,029,172.51 and 330,936.49

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Solution

The fourth proportional to 685,672.75, 1,029,172.51 and 330,936.49 is: 496,724.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,672.75 : 1,029,172.51 = 330,936.49 : x
  2. Step 2: Convert to fraction form
    685,672.75/1,029,172.51 = 330,936.49/x
  3. Step 3: Cross multiply
    685,672.75x = 1,029,172.51 × 330,936.49
  4. Step 4: Simplify right side
    685,672.75x = 340,590,735,904.63
  5. Step 5: Solve for x
    x = 340,590,735,904.63/685,672.75
  6. Step 6: Final answer
    x = 496,724.91

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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.