Home / 689,743.70-1,033,999.95-268,921.70

Finding the Fourth Proportional to 689,743.70, 1,033,999.95 and 268,921.70

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Solution

The fourth proportional to 689,743.70, 1,033,999.95 and 268,921.70 is: 403,142.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,743.70 : 1,033,999.95 = 268,921.70 : x
  2. Step 2: Convert to fraction form
    689,743.70/1,033,999.95 = 268,921.70/x
  3. Step 3: Cross multiply
    689,743.70x = 1,033,999.95 × 268,921.70
  4. Step 4: Simplify right side
    689,743.70x = 278,065,024,353.92
  5. Step 5: Solve for x
    x = 278,065,024,353.92/689,743.70
  6. Step 6: Final answer
    x = 403,142.54

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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.