Home / 688,610.78-1,032,975.69-189,974.78

Finding the Fourth Proportional to 688,610.78, 1,032,975.69 and 189,974.78

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Solution

The fourth proportional to 688,610.78, 1,032,975.69 and 189,974.78 is: 284,978.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,610.78 : 1,032,975.69 = 189,974.78 : x
  2. Step 2: Convert to fraction form
    688,610.78/1,032,975.69 = 189,974.78/x
  3. Step 3: Cross multiply
    688,610.78x = 1,032,975.69 × 189,974.78
  4. Step 4: Simplify right side
    688,610.78x = 196,239,329,453.10
  5. Step 5: Solve for x
    x = 196,239,329,453.10/688,610.78
  6. Step 6: Final answer
    x = 284,978.59

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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.