Home / 678,023-1,016,640.70-257,069.24

Finding the Fourth Proportional to 678,023, 1,016,640.70 and 257,069.24

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Solution

The fourth proportional to 678,023, 1,016,640.70 and 257,069.24 is: 385,454.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,023 : 1,016,640.70 = 257,069.24 : x
  2. Step 2: Convert to fraction form
    678,023/1,016,640.70 = 257,069.24/x
  3. Step 3: Cross multiply
    678,023x = 1,016,640.70 × 257,069.24
  4. Step 4: Simplify right side
    678,023x = 261,347,052,102.07
  5. Step 5: Solve for x
    x = 261,347,052,102.07/678,023
  6. Step 6: Final answer
    x = 385,454.55

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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.