Finding the Fourth Proportional to 1,090,446,857.80, 1,635,670,286.70 and 655,090,390.60
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Solution
The fourth proportional to 1,090,446,857.80, 1,635,670,286.70 and 655,090,390.60 is: 982,635,585.90
Step by Step Solution
- Step 1: Write the proportion equation
1,090,446,857.80 : 1,635,670,286.70 = 655,090,390.60 : x - Step 2: Convert to fraction form
1,090,446,857.80/1,635,670,286.70 = 655,090,390.60/x - Step 3: Cross multiply
1,090,446,857.80x = 1,635,670,286.70 × 655,090,390.60 - Step 4: Simplify right side
1,090,446,857.80x = 1,071,511,887,007,117,056 - Step 5: Solve for x
x = 1,071,511,887,007,117,056/1,090,446,857.80 - Step 6: Final answer
x = 982,635,585.90
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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.