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Finding the Fourth Proportional to 500,498.04, 690,696.30 and 274,128.96

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Solution

The fourth proportional to 500,498.04, 690,696.30 and 274,128.96 is: 378,302.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,498.04 : 690,696.30 = 274,128.96 : x
  2. Step 2: Convert to fraction form
    500,498.04/690,696.30 = 274,128.96/x
  3. Step 3: Cross multiply
    500,498.04x = 690,696.30 × 274,128.96
  4. Step 4: Simplify right side
    500,498.04x = 189,339,858,394.85
  5. Step 5: Solve for x
    x = 189,339,858,394.85/500,498.04
  6. Step 6: Final answer
    x = 378,302.90

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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.