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Finding the Fourth Proportional to 500,662.64, 690,915.96 and 271,222.28

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Solution

The fourth proportional to 500,662.64, 690,915.96 and 271,222.28 is: 374,287.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,662.64 : 690,915.96 = 271,222.28 : x
  2. Step 2: Convert to fraction form
    500,662.64/690,915.96 = 271,222.28/x
  3. Step 3: Cross multiply
    500,662.64x = 690,915.96 × 271,222.28
  4. Step 4: Simplify right side
    500,662.64x = 187,391,801,959.59
  5. Step 5: Solve for x
    x = 187,391,801,959.59/500,662.64
  6. Step 6: Final answer
    x = 374,287.57

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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.