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Finding the Fourth Proportional to 505,842.88, 698,054.88 and 279,497.92

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Solution

The fourth proportional to 505,842.88, 698,054.88 and 279,497.92 is: 385,702.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,842.88 : 698,054.88 = 279,497.92 : x
  2. Step 2: Convert to fraction form
    505,842.88/698,054.88 = 279,497.92/x
  3. Step 3: Cross multiply
    505,842.88x = 698,054.88 × 279,497.92
  4. Step 4: Simplify right side
    505,842.88x = 195,104,887,005.85
  5. Step 5: Solve for x
    x = 195,104,887,005.85/505,842.88
  6. Step 6: Final answer
    x = 385,702.55

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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.