Finding the Fourth Proportional to 431,674,135.20, 647,511,202.80 and 356,091,415.20
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Solution
The fourth proportional to 431,674,135.20, 647,511,202.80 and 356,091,415.20 is: 534,137,122.80
Step by Step Solution
- Step 1: Write the proportion equation
431,674,135.20 : 647,511,202.80 = 356,091,415.20 : x - Step 2: Convert to fraction form
431,674,135.20/647,511,202.80 = 356,091,415.20/x - Step 3: Cross multiply
431,674,135.20x = 647,511,202.80 × 356,091,415.20 - Step 4: Simplify right side
431,674,135.20x = 230,573,180,562,906,176 - Step 5: Solve for x
x = 230,573,180,562,906,176/431,674,135.20 - Step 6: Final answer
x = 534,137,122.80
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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.