Home / 1,128,093.78-1,691,299.08-678,709.38

Finding the Fourth Proportional to 1,128,093.78, 1,691,299.08 and 678,709.38

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Solution

The fourth proportional to 1,128,093.78, 1,691,299.08 and 678,709.38 is: 1,017,557.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,093.78 : 1,691,299.08 = 678,709.38 : x
  2. Step 2: Convert to fraction form
    1,128,093.78/1,691,299.08 = 678,709.38/x
  3. Step 3: Cross multiply
    1,128,093.78x = 1,691,299.08 × 678,709.38
  4. Step 4: Simplify right side
    1,128,093.78x = 1,147,900,549,981.37
  5. Step 5: Solve for x
    x = 1,147,900,549,981.37/1,128,093.78
  6. Step 6: Final answer
    x = 1,017,557.73

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.