Home / 683,935.75-943,880.19-378,005.54

Finding the Fourth Proportional to 683,935.75, 943,880.19 and 378,005.54

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Solution

The fourth proportional to 683,935.75, 943,880.19 and 378,005.54 is: 521,674.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,935.75 : 943,880.19 = 378,005.54 : x
  2. Step 2: Convert to fraction form
    683,935.75/943,880.19 = 378,005.54/x
  3. Step 3: Cross multiply
    683,935.75x = 943,880.19 × 378,005.54
  4. Step 4: Simplify right side
    683,935.75x = 356,791,940,916.25
  5. Step 5: Solve for x
    x = 356,791,940,916.25/683,935.75
  6. Step 6: Final answer
    x = 521,674.65

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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.