Home / 855,469.35-1,180,810.71-493,135.56

Finding the Fourth Proportional to 855,469.35, 1,180,810.71 and 493,135.56

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Solution

The fourth proportional to 855,469.35, 1,180,810.71 and 493,135.56 is: 680,678.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,469.35 : 1,180,810.71 = 493,135.56 : x
  2. Step 2: Convert to fraction form
    855,469.35/1,180,810.71 = 493,135.56/x
  3. Step 3: Cross multiply
    855,469.35x = 1,180,810.71 × 493,135.56
  4. Step 4: Simplify right side
    855,469.35x = 582,299,750,729.85
  5. Step 5: Solve for x
    x = 582,299,750,729.85/855,469.35
  6. Step 6: Final answer
    x = 680,678.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.