Home / 680,569.25-939,185.57-378,834.53

Finding the Fourth Proportional to 680,569.25, 939,185.57 and 378,834.53

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Solution

The fourth proportional to 680,569.25, 939,185.57 and 378,834.53 is: 522,791.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,569.25 : 939,185.57 = 378,834.53 : x
  2. Step 2: Convert to fraction form
    680,569.25/939,185.57 = 378,834.53/x
  3. Step 3: Cross multiply
    680,569.25x = 939,185.57 × 378,834.53
  4. Step 4: Simplify right side
    680,569.25x = 355,795,922,099.56
  5. Step 5: Solve for x
    x = 355,795,922,099.56/680,569.25
  6. Step 6: Final answer
    x = 522,791.65

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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.