Finding the Fourth Proportional to 431,682,766.20, 647,524,149.30 and 402,772,375.80
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Solution
The fourth proportional to 431,682,766.20, 647,524,149.30 and 402,772,375.80 is: 604,158,563.70
Step by Step Solution
- Step 1: Write the proportion equation
431,682,766.20 : 647,524,149.30 = 402,772,375.80 : x - Step 2: Convert to fraction form
431,682,766.20/647,524,149.30 = 402,772,375.80/x - Step 3: Cross multiply
431,682,766.20x = 647,524,149.30 × 402,772,375.80 - Step 4: Simplify right side
431,682,766.20x = 260,804,840,001,434,880 - Step 5: Solve for x
x = 260,804,840,001,434,880/431,682,766.20 - Step 6: Final answer
x = 604,158,563.70
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.