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Finding the Fourth Proportional to 505,655.57, 757,619.93 and 278,141.54

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Solution

The fourth proportional to 505,655.57, 757,619.93 and 278,141.54 is: 416,737.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,655.57 : 757,619.93 = 278,141.54 : x
  2. Step 2: Convert to fraction form
    505,655.57/757,619.93 = 278,141.54/x
  3. Step 3: Cross multiply
    505,655.57x = 757,619.93 × 278,141.54
  4. Step 4: Simplify right side
    505,655.57x = 210,725,568,886.09
  5. Step 5: Solve for x
    x = 210,725,568,886.09/505,655.57
  6. Step 6: Final answer
    x = 416,737.37

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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.