Finding the Fourth Proportional to 1,419,981,496.20, 2,128,964,474.70 and 643,998,904.20
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Solution
The fourth proportional to 1,419,981,496.20, 2,128,964,474.70 and 643,998,904.20 is: 965,541,306.32
Step by Step Solution
- Step 1: Write the proportion equation
1,419,981,496.20 : 2,128,964,474.70 = 643,998,904.20 : x - Step 2: Convert to fraction form
1,419,981,496.20/2,128,964,474.70 = 643,998,904.20/x - Step 3: Cross multiply
1,419,981,496.20x = 2,128,964,474.70 × 643,998,904.20 - Step 4: Simplify right side
1,419,981,496.20x = 1,371,050,788,787,528,704 - Step 5: Solve for x
x = 1,371,050,788,787,528,704/1,419,981,496.20 - Step 6: Final answer
x = 965,541,306.32
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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.