Home / 685,021.14-945,519.33-398,596.74

Finding the Fourth Proportional to 685,021.14, 945,519.33 and 398,596.74

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Solution

The fourth proportional to 685,021.14, 945,519.33 and 398,596.74 is: 550,174.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,021.14 : 945,519.33 = 398,596.74 : x
  2. Step 2: Convert to fraction form
    685,021.14/945,519.33 = 398,596.74/x
  3. Step 3: Cross multiply
    685,021.14x = 945,519.33 × 398,596.74
  4. Step 4: Simplify right side
    685,021.14x = 376,880,922,544.98
  5. Step 5: Solve for x
    x = 376,880,922,544.98/685,021.14
  6. Step 6: Final answer
    x = 550,174.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.