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Finding the Fourth Proportional to 481,781.80, 721,884.32 and 291,665.93

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Solution

The fourth proportional to 481,781.80, 721,884.32 and 291,665.93 is: 437,021.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,781.80 : 721,884.32 = 291,665.93 : x
  2. Step 2: Convert to fraction form
    481,781.80/721,884.32 = 291,665.93/x
  3. Step 3: Cross multiply
    481,781.80x = 721,884.32 × 291,665.93
  4. Step 4: Simplify right side
    481,781.80x = 210,549,057,571.21
  5. Step 5: Solve for x
    x = 210,549,057,571.21/481,781.80
  6. Step 6: Final answer
    x = 437,021.61

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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.