Home / 689,145.57-1,033,717.75-215,867.84

Finding the Fourth Proportional to 689,145.57, 1,033,717.75 and 215,867.84

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Solution

The fourth proportional to 689,145.57, 1,033,717.75 and 215,867.84 is: 323,801.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,145.57 : 1,033,717.75 = 215,867.84 : x
  2. Step 2: Convert to fraction form
    689,145.57/1,033,717.75 = 215,867.84/x
  3. Step 3: Cross multiply
    689,145.57x = 1,033,717.75 × 215,867.84
  4. Step 4: Simplify right side
    689,145.57x = 223,146,412,153.90
  5. Step 5: Solve for x
    x = 223,146,412,153.90/689,145.57
  6. Step 6: Final answer
    x = 323,801.56

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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.