Finding the Fourth Proportional to 1,979,529,620.40, 2,971,207,618.20 and 998,064,381.60
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Solution
The fourth proportional to 1,979,529,620.40, 2,971,207,618.20 and 998,064,381.60 is: 1,498,061,187.62
Step by Step Solution
- Step 1: Write the proportion equation
1,979,529,620.40 : 2,971,207,618.20 = 998,064,381.60 : x - Step 2: Convert to fraction form
1,979,529,620.40/2,971,207,618.20 = 998,064,381.60/x - Step 3: Cross multiply
1,979,529,620.40x = 2,971,207,618.20 × 998,064,381.60 - Step 4: Simplify right side
1,979,529,620.40x = 2,965,456,494,063,991,808 - Step 5: Solve for x
x = 2,965,456,494,063,991,808/1,979,529,620.40 - Step 6: Final answer
x = 1,498,061,187.62
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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.