Home / 786,087.75-1,179,380.85-280,637.90

Finding the Fourth Proportional to 786,087.75, 1,179,380.85 and 280,637.90

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Solution

The fourth proportional to 786,087.75, 1,179,380.85 and 280,637.90 is: 421,045.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,087.75 : 1,179,380.85 = 280,637.90 : x
  2. Step 2: Convert to fraction form
    786,087.75/1,179,380.85 = 280,637.90/x
  3. Step 3: Cross multiply
    786,087.75x = 1,179,380.85 × 280,637.90
  4. Step 4: Simplify right side
    786,087.75x = 330,978,957,744.12
  5. Step 5: Solve for x
    x = 330,978,957,744.12/786,087.75
  6. Step 6: Final answer
    x = 421,045.82

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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.