Home / 505,820.36-698,046.26-279,480.52

Finding the Fourth Proportional to 505,820.36, 698,046.26 and 279,480.52

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Solution

The fourth proportional to 505,820.36, 698,046.26 and 279,480.52 is: 385,690.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,820.36 : 698,046.26 = 279,480.52 : x
  2. Step 2: Convert to fraction form
    505,820.36/698,046.26 = 279,480.52/x
  3. Step 3: Cross multiply
    505,820.36x = 698,046.26 × 279,480.52
  4. Step 4: Simplify right side
    505,820.36x = 195,090,331,728.86
  5. Step 5: Solve for x
    x = 195,090,331,728.86/505,820.36
  6. Step 6: Final answer
    x = 385,690.94

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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.