Finding the Fourth Proportional to 1,442,721,434.64, 1,990,743,175.68 and 807,608,916.96
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Solution
The fourth proportional to 1,442,721,434.64, 1,990,743,175.68 and 807,608,916.96 is: 1,114,381,405.48
Step by Step Solution
- Step 1: Write the proportion equation
1,442,721,434.64 : 1,990,743,175.68 = 807,608,916.96 : x - Step 2: Convert to fraction form
1,442,721,434.64/1,990,743,175.68 = 807,608,916.96/x - Step 3: Cross multiply
1,442,721,434.64x = 1,990,743,175.68 × 807,608,916.96 - Step 4: Simplify right side
1,442,721,434.64x = 1,607,741,940,056,435,968 - Step 5: Solve for x
x = 1,607,741,940,056,435,968/1,442,721,434.64 - Step 6: Final answer
x = 1,114,381,405.48
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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.