Home / 505,917.27-698,138.43-279,548.19

Finding the Fourth Proportional to 505,917.27, 698,138.43 and 279,548.19

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Solution

The fourth proportional to 505,917.27, 698,138.43 and 279,548.19 is: 385,761.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,917.27 : 698,138.43 = 279,548.19 : x
  2. Step 2: Convert to fraction form
    505,917.27/698,138.43 = 279,548.19/x
  3. Step 3: Cross multiply
    505,917.27x = 698,138.43 × 279,548.19
  4. Step 4: Simplify right side
    505,917.27x = 195,163,334,475.94
  5. Step 5: Solve for x
    x = 195,163,334,475.94/505,917.27
  6. Step 6: Final answer
    x = 385,761.36

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1.5x scale

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.