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Finding the Fourth Proportional to 501,004.64, 691,396.08 and 274,636.64

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Solution

The fourth proportional to 501,004.64, 691,396.08 and 274,636.64 is: 379,003.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,004.64 : 691,396.08 = 274,636.64 : x
  2. Step 2: Convert to fraction form
    501,004.64/691,396.08 = 274,636.64/x
  3. Step 3: Cross multiply
    501,004.64x = 691,396.08 × 274,636.64
  4. Step 4: Simplify right side
    501,004.64x = 189,882,696,320.37
  5. Step 5: Solve for x
    x = 189,882,696,320.37/501,004.64
  6. Step 6: Final answer
    x = 379,003.87

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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.