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Finding the Fourth Proportional to 500,750.08, 691,012.56 and 274,390.72

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Solution

The fourth proportional to 500,750.08, 691,012.56 and 274,390.72 is: 378,646.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,750.08 : 691,012.56 = 274,390.72 : x
  2. Step 2: Convert to fraction form
    500,750.08/691,012.56 = 274,390.72/x
  3. Step 3: Cross multiply
    500,750.08x = 691,012.56 × 274,390.72
  4. Step 4: Simplify right side
    500,750.08x = 189,607,433,867.44
  5. Step 5: Solve for x
    x = 189,607,433,867.44/500,750.08
  6. Step 6: Final answer
    x = 378,646.84

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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.