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Finding the Fourth Proportional to 500,573.36, 690,792.39 and 271,129.71

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Solution

The fourth proportional to 500,573.36, 690,792.39 and 271,129.71 is: 374,159.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,573.36 : 690,792.39 = 271,129.71 : x
  2. Step 2: Convert to fraction form
    500,573.36/690,792.39 = 271,129.71/x
  3. Step 3: Cross multiply
    500,573.36x = 690,792.39 × 271,129.71
  4. Step 4: Simplify right side
    500,573.36x = 187,294,340,370.91
  5. Step 5: Solve for x
    x = 187,294,340,370.91/500,573.36
  6. Step 6: Final answer
    x = 374,159.63

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1.5x scale

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.