Home / 678,872.13-1,018,439.33-258,115.29

Finding the Fourth Proportional to 678,872.13, 1,018,439.33 and 258,115.29

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Solution

The fourth proportional to 678,872.13, 1,018,439.33 and 258,115.29 is: 387,222.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,872.13 : 1,018,439.33 = 258,115.29 : x
  2. Step 2: Convert to fraction form
    678,872.13/1,018,439.33 = 258,115.29/x
  3. Step 3: Cross multiply
    678,872.13x = 1,018,439.33 × 258,115.29
  4. Step 4: Simplify right side
    678,872.13x = 262,874,763,010.36
  5. Step 5: Solve for x
    x = 262,874,763,010.36/678,872.13
  6. Step 6: Final answer
    x = 387,222.79

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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.