Home / 685,678.81-1,029,181.62-330,942.55

Finding the Fourth Proportional to 685,678.81, 1,029,181.62 and 330,942.55

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Solution

The fourth proportional to 685,678.81, 1,029,181.62 and 330,942.55 is: 496,734.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,678.81 : 1,029,181.62 = 330,942.55 : x
  2. Step 2: Convert to fraction form
    685,678.81/1,029,181.62 = 330,942.55/x
  3. Step 3: Cross multiply
    685,678.81x = 1,029,181.62 × 330,942.55
  4. Step 4: Simplify right side
    685,678.81x = 340,599,989,735.93
  5. Step 5: Solve for x
    x = 340,599,989,735.93/685,678.81
  6. Step 6: Final answer
    x = 496,734.02

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1.5x scale

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.