Home / 678,829.50-1,018,375.26-258,072.60

Finding the Fourth Proportional to 678,829.50, 1,018,375.26 and 258,072.60

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Solution

The fourth proportional to 678,829.50, 1,018,375.26 and 258,072.60 is: 387,158.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,829.50 : 1,018,375.26 = 258,072.60 : x
  2. Step 2: Convert to fraction form
    678,829.50/1,018,375.26 = 258,072.60/x
  3. Step 3: Cross multiply
    678,829.50x = 1,018,375.26 × 258,072.60
  4. Step 4: Simplify right side
    678,829.50x = 262,814,751,123.88
  5. Step 5: Solve for x
    x = 262,814,751,123.88/678,829.50
  6. Step 6: Final answer
    x = 387,158.71

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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.