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Finding the Fourth Proportional to 505,927.08, 698,151.96 and 279,558

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Solution

The fourth proportional to 505,927.08, 698,151.96 and 279,558 is: 385,774.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,927.08 : 698,151.96 = 279,558 : x
  2. Step 2: Convert to fraction form
    505,927.08/698,151.96 = 279,558/x
  3. Step 3: Cross multiply
    505,927.08x = 698,151.96 × 279,558
  4. Step 4: Simplify right side
    505,927.08x = 195,173,965,633.68
  5. Step 5: Solve for x
    x = 195,173,965,633.68/505,927.08
  6. Step 6: Final answer
    x = 385,774.89

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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.