Finding the Fourth Proportional to 579,442,375.20, 869,163,562.80 and 443,393,479.20
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Solution
The fourth proportional to 579,442,375.20, 869,163,562.80 and 443,393,479.20 is: 665,090,218.80
Step by Step Solution
- Step 1: Write the proportion equation
579,442,375.20 : 869,163,562.80 = 443,393,479.20 : x - Step 2: Convert to fraction form
579,442,375.20/869,163,562.80 = 443,393,479.20/x - Step 3: Cross multiply
579,442,375.20x = 869,163,562.80 × 443,393,479.20 - Step 4: Simplify right side
579,442,375.20x = 385,381,456,103,759,680 - Step 5: Solve for x
x = 385,381,456,103,759,680/579,442,375.20 - Step 6: Final answer
x = 665,090,218.80
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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.