Finding the Fourth Proportional to 1,442,651,053.23, 1,990,862,286.35 and 782,601,331.23
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Solution
The fourth proportional to 1,442,651,053.23, 1,990,862,286.35 and 782,601,331.23 is: 1,079,991,916.34
Step by Step Solution
- Step 1: Write the proportion equation
1,442,651,053.23 : 1,990,862,286.35 = 782,601,331.23 : x - Step 2: Convert to fraction form
1,442,651,053.23/1,990,862,286.35 = 782,601,331.23/x - Step 3: Cross multiply
1,442,651,053.23x = 1,990,862,286.35 × 782,601,331.23 - Step 4: Simplify right side
1,442,651,053.23x = 1,558,051,475,589,198,592 - Step 5: Solve for x
x = 1,558,051,475,589,198,592/1,442,651,053.23 - Step 6: Final answer
x = 1,079,991,916.34
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.