Home / 475,121.65-711,025.75-388,734.12

Finding the Fourth Proportional to 475,121.65, 711,025.75 and 388,734.12

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Solution

The fourth proportional to 475,121.65, 711,025.75 and 388,734.12 is: 581,745.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,121.65 : 711,025.75 = 388,734.12 : x
  2. Step 2: Convert to fraction form
    475,121.65/711,025.75 = 388,734.12/x
  3. Step 3: Cross multiply
    475,121.65x = 711,025.75 × 388,734.12
  4. Step 4: Simplify right side
    475,121.65x = 276,399,967,522.88
  5. Step 5: Solve for x
    x = 276,399,967,522.88/475,121.65
  6. Step 6: Final answer
    x = 581,745.68

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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.