Home / 809,420.65-1,214,134.62-210,339.38

Finding the Fourth Proportional to 809,420.65, 1,214,134.62 and 210,339.38

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Solution

The fourth proportional to 809,420.65, 1,214,134.62 and 210,339.38 is: 315,510.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,420.65 : 1,214,134.62 = 210,339.38 : x
  2. Step 2: Convert to fraction form
    809,420.65/1,214,134.62 = 210,339.38/x
  3. Step 3: Cross multiply
    809,420.65x = 1,214,134.62 × 210,339.38
  4. Step 4: Simplify right side
    809,420.65x = 255,380,325,453.90
  5. Step 5: Solve for x
    x = 255,380,325,453.90/809,420.65
  6. Step 6: Final answer
    x = 315,510.02

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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.