Home / 520,553.94-780,306.03-395,632.50

Finding the Fourth Proportional to 520,553.94, 780,306.03 and 395,632.50

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Solution

The fourth proportional to 520,553.94, 780,306.03 and 395,632.50 is: 593,049.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,553.94 : 780,306.03 = 395,632.50 : x
  2. Step 2: Convert to fraction form
    520,553.94/780,306.03 = 395,632.50/x
  3. Step 3: Cross multiply
    520,553.94x = 780,306.03 × 395,632.50
  4. Step 4: Simplify right side
    520,553.94x = 308,714,425,413.98
  5. Step 5: Solve for x
    x = 308,714,425,413.98/520,553.94
  6. Step 6: Final answer
    x = 593,049.83

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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.