Home / 689,268.95-1,033,903.79-215,991.35

Finding the Fourth Proportional to 689,268.95, 1,033,903.79 and 215,991.35

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Solution

The fourth proportional to 689,268.95, 1,033,903.79 and 215,991.35 is: 323,987.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,268.95 : 1,033,903.79 = 215,991.35 : x
  2. Step 2: Convert to fraction form
    689,268.95/1,033,903.79 = 215,991.35/x
  3. Step 3: Cross multiply
    689,268.95x = 1,033,903.79 × 215,991.35
  4. Step 4: Simplify right side
    689,268.95x = 223,314,275,372.22
  5. Step 5: Solve for x
    x = 223,314,275,372.22/689,268.95
  6. Step 6: Final answer
    x = 323,987.14

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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.