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Finding the Fourth Proportional to 500,744.08, 691,004.28 and 274,384.72

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Solution

The fourth proportional to 500,744.08, 691,004.28 and 274,384.72 is: 378,638.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,744.08 : 691,004.28 = 274,384.72 : x
  2. Step 2: Convert to fraction form
    500,744.08/691,004.28 = 274,384.72/x
  3. Step 3: Cross multiply
    500,744.08x = 691,004.28 × 274,384.72
  4. Step 4: Simplify right side
    500,744.08x = 189,601,015,886.60
  5. Step 5: Solve for x
    x = 189,601,015,886.60/500,744.08
  6. Step 6: Final answer
    x = 378,638.56

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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.