Home / 470,584.26-649,077.94-309,387.78

Finding the Fourth Proportional to 470,584.26, 649,077.94 and 309,387.78

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Solution

The fourth proportional to 470,584.26, 649,077.94 and 309,387.78 is: 426,739.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,584.26 : 649,077.94 = 309,387.78 : x
  2. Step 2: Convert to fraction form
    470,584.26/649,077.94 = 309,387.78/x
  3. Step 3: Cross multiply
    470,584.26x = 649,077.94 × 309,387.78
  4. Step 4: Simplify right side
    470,584.26x = 200,816,782,903.57
  5. Step 5: Solve for x
    x = 200,816,782,903.57/470,584.26
  6. Step 6: Final answer
    x = 426,739.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.