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Finding the Fourth Proportional to 505,834.44, 698,051.52 and 279,479.94

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Solution

The fourth proportional to 505,834.44, 698,051.52 and 279,479.94 is: 385,682.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,834.44 : 698,051.52 = 279,479.94 : x
  2. Step 2: Convert to fraction form
    505,834.44/698,051.52 = 279,479.94/x
  3. Step 3: Cross multiply
    505,834.44x = 698,051.52 × 279,479.94
  4. Step 4: Simplify right side
    505,834.44x = 195,091,396,926.51
  5. Step 5: Solve for x
    x = 195,091,396,926.51/505,834.44
  6. Step 6: Final answer
    x = 385,682.31

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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.