Finding the Fourth Proportional to 383,313,447.56, 529,408,895.20 and 257,647,471.08
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Solution
The fourth proportional to 383,313,447.56, 529,408,895.20 and 257,647,471.08 is: 355,846,798.19
Step by Step Solution
- Step 1: Write the proportion equation
383,313,447.56 : 529,408,895.20 = 257,647,471.08 : x - Step 2: Convert to fraction form
383,313,447.56/529,408,895.20 = 257,647,471.08/x - Step 3: Cross multiply
383,313,447.56x = 529,408,895.20 × 257,647,471.08 - Step 4: Simplify right side
383,313,447.56x = 136,400,863,014,892,640 - Step 5: Solve for x
x = 136,400,863,014,892,640/383,313,447.56 - Step 6: Final answer
x = 355,846,798.19
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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.