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Finding the Fourth Proportional to 501,023.88, 691,411.50 and 274,669.56

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Solution

The fourth proportional to 501,023.88, 691,411.50 and 274,669.56 is: 379,043.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,023.88 : 691,411.50 = 274,669.56 : x
  2. Step 2: Convert to fraction form
    501,023.88/691,411.50 = 274,669.56/x
  3. Step 3: Cross multiply
    501,023.88x = 691,411.50 × 274,669.56
  4. Step 4: Simplify right side
    501,023.88x = 189,909,692,483.94
  5. Step 5: Solve for x
    x = 189,909,692,483.94/501,023.88
  6. Step 6: Final answer
    x = 379,043.20

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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.