Finding the Fourth Proportional to 1,390,981,277.80, 2,086,471,916.70 and 746,008,733.80
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Solution
The fourth proportional to 1,390,981,277.80, 2,086,471,916.70 and 746,008,733.80 is: 1,119,013,100.70
Step by Step Solution
- Step 1: Write the proportion equation
1,390,981,277.80 : 2,086,471,916.70 = 746,008,733.80 : x - Step 2: Convert to fraction form
1,390,981,277.80/2,086,471,916.70 = 746,008,733.80/x - Step 3: Cross multiply
1,390,981,277.80x = 2,086,471,916.70 × 746,008,733.80 - Step 4: Simplify right side
1,390,981,277.80x = 1,556,526,272,686,626,048 - Step 5: Solve for x
x = 1,556,526,272,686,626,048/1,390,981,277.80 - Step 6: Final answer
x = 1,119,013,100.70
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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.