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Finding the Fourth Proportional to 505,813.32, 698,029.74 and 279,464.04

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Solution

The fourth proportional to 505,813.32, 698,029.74 and 279,464.04 is: 385,664.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,813.32 : 698,029.74 = 279,464.04 : x
  2. Step 2: Convert to fraction form
    505,813.32/698,029.74 = 279,464.04/x
  3. Step 3: Cross multiply
    505,813.32x = 698,029.74 × 279,464.04
  4. Step 4: Simplify right side
    505,813.32x = 195,074,211,180.55
  5. Step 5: Solve for x
    x = 195,074,211,180.55/505,813.32
  6. Step 6: Final answer
    x = 385,664.44

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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.