Home / 678,745.80-1,018,233.90-205,427.40

Finding the Fourth Proportional to 678,745.80, 1,018,233.90 and 205,427.40

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Solution

The fourth proportional to 678,745.80, 1,018,233.90 and 205,427.40 is: 308,175.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,745.80 : 1,018,233.90 = 205,427.40 : x
  2. Step 2: Convert to fraction form
    678,745.80/1,018,233.90 = 205,427.40/x
  3. Step 3: Cross multiply
    678,745.80x = 1,018,233.90 × 205,427.40
  4. Step 4: Simplify right side
    678,745.80x = 209,173,142,668.86
  5. Step 5: Solve for x
    x = 209,173,142,668.86/678,745.80
  6. Step 6: Final answer
    x = 308,175.97

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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.