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Finding the Fourth Proportional to 890,896.40, 1,336,202.40 and 259,662.56

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Solution

The fourth proportional to 890,896.40, 1,336,202.40 and 259,662.56 is: 389,452.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,896.40 : 1,336,202.40 = 259,662.56 : x
  2. Step 2: Convert to fraction form
    890,896.40/1,336,202.40 = 259,662.56/x
  3. Step 3: Cross multiply
    890,896.40x = 1,336,202.40 × 259,662.56
  4. Step 4: Simplify right side
    890,896.40x = 346,961,735,862.14
  5. Step 5: Solve for x
    x = 346,961,735,862.14/890,896.40
  6. Step 6: Final answer
    x = 389,452.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.