Home / 689,208.30-1,033,812.48-215,895.36

Finding the Fourth Proportional to 689,208.30, 1,033,812.48 and 215,895.36

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Solution

The fourth proportional to 689,208.30, 1,033,812.48 and 215,895.36 is: 323,843.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,208.30 : 1,033,812.48 = 215,895.36 : x
  2. Step 2: Convert to fraction form
    689,208.30/1,033,812.48 = 215,895.36/x
  3. Step 3: Cross multiply
    689,208.30x = 1,033,812.48 × 215,895.36
  4. Step 4: Simplify right side
    689,208.30x = 223,195,317,542.09
  5. Step 5: Solve for x
    x = 223,195,317,542.09/689,208.30
  6. Step 6: Final answer
    x = 323,843.05

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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.