Finding the Fourth Proportional to 1,442,705,342.42, 1,990,765,410.62 and 807,660,608.38
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Solution
The fourth proportional to 1,442,705,342.42, 1,990,765,410.62 and 807,660,608.38 is: 1,114,477,610.50
Step by Step Solution
- Step 1: Write the proportion equation
1,442,705,342.42 : 1,990,765,410.62 = 807,660,608.38 : x - Step 2: Convert to fraction form
1,442,705,342.42/1,990,765,410.62 = 807,660,608.38/x - Step 3: Cross multiply
1,442,705,342.42x = 1,990,765,410.62 × 807,660,608.38 - Step 4: Simplify right side
1,442,705,342.42x = 1,607,862,802,674,194,688 - Step 5: Solve for x
x = 1,607,862,802,674,194,688/1,442,705,342.42 - Step 6: Final answer
x = 1,114,477,610.50
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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.