Home / 678,418.80-1,017,775.80-205,091.79

Finding the Fourth Proportional to 678,418.80, 1,017,775.80 and 205,091.79

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Solution

The fourth proportional to 678,418.80, 1,017,775.80 and 205,091.79 is: 307,682.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,418.80 : 1,017,775.80 = 205,091.79 : x
  2. Step 2: Convert to fraction form
    678,418.80/1,017,775.80 = 205,091.79/x
  3. Step 3: Cross multiply
    678,418.80x = 1,017,775.80 × 205,091.79
  4. Step 4: Simplify right side
    678,418.80x = 208,737,460,640.68
  5. Step 5: Solve for x
    x = 208,737,460,640.68/678,418.80
  6. Step 6: Final answer
    x = 307,682.31

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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.