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Finding the Fourth Proportional to 500,716.08, 690,996.96 and 274,348.08

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Solution

The fourth proportional to 500,716.08, 690,996.96 and 274,348.08 is: 378,605.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,716.08 : 690,996.96 = 274,348.08 : x
  2. Step 2: Convert to fraction form
    500,716.08/690,996.96 = 274,348.08/x
  3. Step 3: Cross multiply
    500,716.08x = 690,996.96 × 274,348.08
  4. Step 4: Simplify right side
    500,716.08x = 189,573,689,261.84
  5. Step 5: Solve for x
    x = 189,573,689,261.84/500,716.08
  6. Step 6: Final answer
    x = 378,605.16

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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.