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Finding the Fourth Proportional to 500,762.58, 691,029.81 and 274,403.22

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Solution

The fourth proportional to 500,762.58, 691,029.81 and 274,403.22 is: 378,664.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,762.58 : 691,029.81 = 274,403.22 : x
  2. Step 2: Convert to fraction form
    500,762.58/691,029.81 = 274,403.22/x
  3. Step 3: Cross multiply
    500,762.58x = 691,029.81 × 274,403.22
  4. Step 4: Simplify right side
    500,762.58x = 189,620,804,979.99
  5. Step 5: Solve for x
    x = 189,620,804,979.99/500,762.58
  6. Step 6: Final answer
    x = 378,664.09

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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.