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Finding the Fourth Proportional to 501,006.64, 691,398.84 and 274,638.64

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Solution

The fourth proportional to 501,006.64, 691,398.84 and 274,638.64 is: 379,006.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,006.64 : 691,398.84 = 274,638.64 : x
  2. Step 2: Convert to fraction form
    501,006.64/691,398.84 = 274,638.64/x
  3. Step 3: Cross multiply
    501,006.64x = 691,398.84 × 274,638.64
  4. Step 4: Simplify right side
    501,006.64x = 189,884,837,115.18
  5. Step 5: Solve for x
    x = 189,884,837,115.18/501,006.64
  6. Step 6: Final answer
    x = 379,006.63

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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.