Home / 505,267.78-697,245.02-287,455.94

Finding the Fourth Proportional to 505,267.78, 697,245.02 and 287,455.94

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Solution

The fourth proportional to 505,267.78, 697,245.02 and 287,455.94 is: 396,675.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,267.78 : 697,245.02 = 287,455.94 : x
  2. Step 2: Convert to fraction form
    505,267.78/697,245.02 = 287,455.94/x
  3. Step 3: Cross multiply
    505,267.78x = 697,245.02 × 287,455.94
  4. Step 4: Simplify right side
    505,267.78x = 200,427,222,634.42
  5. Step 5: Solve for x
    x = 200,427,222,634.42/505,267.78
  6. Step 6: Final answer
    x = 396,675.25

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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.