Home / 678,896.12-1,018,393.38-205,618.38

Finding the Fourth Proportional to 678,896.12, 1,018,393.38 and 205,618.38

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Solution

The fourth proportional to 678,896.12, 1,018,393.38 and 205,618.38 is: 308,442.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,896.12 : 1,018,393.38 = 205,618.38 : x
  2. Step 2: Convert to fraction form
    678,896.12/1,018,393.38 = 205,618.38/x
  3. Step 3: Cross multiply
    678,896.12x = 1,018,393.38 × 205,618.38
  4. Step 4: Simplify right side
    678,896.12x = 209,400,396,998.32
  5. Step 5: Solve for x
    x = 209,400,396,998.32/678,896.12
  6. Step 6: Final answer
    x = 308,442.47

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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.