Home / 678,023.01-1,016,640.72-257,069.25

Finding the Fourth Proportional to 678,023.01, 1,016,640.72 and 257,069.25

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Solution

The fourth proportional to 678,023.01, 1,016,640.72 and 257,069.25 is: 385,454.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,023.01 : 1,016,640.72 = 257,069.25 : x
  2. Step 2: Convert to fraction form
    678,023.01/1,016,640.72 = 257,069.25/x
  3. Step 3: Cross multiply
    678,023.01x = 1,016,640.72 × 257,069.25
  4. Step 4: Simplify right side
    678,023.01x = 261,347,067,409.86
  5. Step 5: Solve for x
    x = 261,347,067,409.86/678,023.01
  6. Step 6: Final answer
    x = 385,454.57

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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.