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Finding the Fourth Proportional to 500,458.83, 690,633.54 and 271,017.92

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Solution

The fourth proportional to 500,458.83, 690,633.54 and 271,017.92 is: 374,004.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,458.83 : 690,633.54 = 271,017.92 : x
  2. Step 2: Convert to fraction form
    500,458.83/690,633.54 = 271,017.92/x
  3. Step 3: Cross multiply
    500,458.83x = 690,633.54 × 271,017.92
  4. Step 4: Simplify right side
    500,458.83x = 187,174,062,039.87
  5. Step 5: Solve for x
    x = 187,174,062,039.87/500,458.83
  6. Step 6: Final answer
    x = 374,004.91

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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.