Home / 990,268.14-1,485,460.53-280,237.26

Finding the Fourth Proportional to 990,268.14, 1,485,460.53 and 280,237.26

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Solution

The fourth proportional to 990,268.14, 1,485,460.53 and 280,237.26 is: 420,372.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,268.14 : 1,485,460.53 = 280,237.26 : x
  2. Step 2: Convert to fraction form
    990,268.14/1,485,460.53 = 280,237.26/x
  3. Step 3: Cross multiply
    990,268.14x = 1,485,460.53 × 280,237.26
  4. Step 4: Simplify right side
    990,268.14x = 416,281,388,765.35
  5. Step 5: Solve for x
    x = 416,281,388,765.35/990,268.14
  6. Step 6: Final answer
    x = 420,372.39

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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.