Finding the Fourth Proportional to 383,313,450.68, 529,408,899.51 and 257,647,474.21
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Solution
The fourth proportional to 383,313,450.68, 529,408,899.51 and 257,647,474.21 is: 355,846,802.51
Step by Step Solution
- Step 1: Write the proportion equation
383,313,450.68 : 529,408,899.51 = 257,647,474.21 : x - Step 2: Convert to fraction form
383,313,450.68/529,408,899.51 = 257,647,474.21/x - Step 3: Cross multiply
383,313,450.68x = 529,408,899.51 × 257,647,474.21 - Step 4: Simplify right side
383,313,450.68x = 136,400,865,783,047,216 - Step 5: Solve for x
x = 136,400,865,783,047,216/383,313,450.68 - Step 6: Final answer
x = 355,846,802.51
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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.