Finding the Fourth Proportional to 1,442,705,355.68, 1,990,765,428.90 and 807,660,621.62
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Solution
The fourth proportional to 1,442,705,355.68, 1,990,765,428.90 and 807,660,621.62 is: 1,114,477,628.77
Step by Step Solution
- Step 1: Write the proportion equation
1,442,705,355.68 : 1,990,765,428.90 = 807,660,621.62 : x - Step 2: Convert to fraction form
1,442,705,355.68/1,990,765,428.90 = 807,660,621.62/x - Step 3: Cross multiply
1,442,705,355.68x = 1,990,765,428.90 × 807,660,621.62 - Step 4: Simplify right side
1,442,705,355.68x = 1,607,862,843,804,979,968 - Step 5: Solve for x
x = 1,607,862,843,804,979,968/1,442,705,355.68 - Step 6: Final answer
x = 1,114,477,628.77
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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.