Finding the Fourth Proportional to 5,079,198,479.76, 7,619,778,869.99 and 1,931,168,324.88
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Solution
The fourth proportional to 5,079,198,479.76, 7,619,778,869.99 and 1,931,168,324.88 is: 2,897,125,531.70
Step by Step Solution
- Step 1: Write the proportion equation
5,079,198,479.76 : 7,619,778,869.99 = 1,931,168,324.88 : x - Step 2: Convert to fraction form
5,079,198,479.76/7,619,778,869.99 = 1,931,168,324.88/x - Step 3: Cross multiply
5,079,198,479.76x = 7,619,778,869.99 × 1,931,168,324.88 - Step 4: Simplify right side
5,079,198,479.76x = 14,715,075,596,304,951,296 - Step 5: Solve for x
x = 14,715,075,596,304,951,296/5,079,198,479.76 - Step 6: Final answer
x = 2,897,125,531.70
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1.5x scale
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.