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Finding the Fourth Proportional to 500,517.94, 690,715.05 and 274,167.22

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Solution

The fourth proportional to 500,517.94, 690,715.05 and 274,167.22 is: 378,350.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,517.94 : 690,715.05 = 274,167.22 : x
  2. Step 2: Convert to fraction form
    500,517.94/690,715.05 = 274,167.22/x
  3. Step 3: Cross multiply
    500,517.94x = 690,715.05 × 274,167.22
  4. Step 4: Simplify right side
    500,517.94x = 189,371,425,070.66
  5. Step 5: Solve for x
    x = 189,371,425,070.66/500,517.94
  6. Step 6: Final answer
    x = 378,350.92

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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.