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Finding the Fourth Proportional to 500,568.33, 690,778.80 and 271,119.91

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Solution

The fourth proportional to 500,568.33, 690,778.80 and 271,119.91 is: 374,142.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,568.33 : 690,778.80 = 271,119.91 : x
  2. Step 2: Convert to fraction form
    500,568.33/690,778.80 = 271,119.91/x
  3. Step 3: Cross multiply
    500,568.33x = 690,778.80 × 271,119.91
  4. Step 4: Simplify right side
    500,568.33x = 187,283,886,085.91
  5. Step 5: Solve for x
    x = 187,283,886,085.91/500,568.33
  6. Step 6: Final answer
    x = 374,142.50

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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.