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Finding the Fourth Proportional to 483,944.40, 725,916.60 and 421,736.40

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Solution

The fourth proportional to 483,944.40, 725,916.60 and 421,736.40 is: 632,604.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,944.40 : 725,916.60 = 421,736.40 : x
  2. Step 2: Convert to fraction form
    483,944.40/725,916.60 = 421,736.40/x
  3. Step 3: Cross multiply
    483,944.40x = 725,916.60 × 421,736.40
  4. Step 4: Simplify right side
    483,944.40x = 306,145,453,584.24
  5. Step 5: Solve for x
    x = 306,145,453,584.24/483,944.40
  6. Step 6: Final answer
    x = 632,604.60

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Similar ratio
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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.