Home / 505,821.36-698,047.64-279,481.52

Finding the Fourth Proportional to 505,821.36, 698,047.64 and 279,481.52

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Solution

The fourth proportional to 505,821.36, 698,047.64 and 279,481.52 is: 385,692.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,821.36 : 698,047.64 = 279,481.52 : x
  2. Step 2: Convert to fraction form
    505,821.36/698,047.64 = 279,481.52/x
  3. Step 3: Cross multiply
    505,821.36x = 698,047.64 × 279,481.52
  4. Step 4: Simplify right side
    505,821.36x = 195,091,415,459.61
  5. Step 5: Solve for x
    x = 195,091,415,459.61/505,821.36
  6. Step 6: Final answer
    x = 385,692.32

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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.