Finding the Fourth Proportional to 1,214,677,431.80, 1,822,016,147.70 and 889,802,372.60
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Solution
The fourth proportional to 1,214,677,431.80, 1,822,016,147.70 and 889,802,372.60 is: 1,334,703,558.90
Step by Step Solution
- Step 1: Write the proportion equation
1,214,677,431.80 : 1,822,016,147.70 = 889,802,372.60 : x - Step 2: Convert to fraction form
1,214,677,431.80/1,822,016,147.70 = 889,802,372.60/x - Step 3: Cross multiply
1,214,677,431.80x = 1,822,016,147.70 × 889,802,372.60 - Step 4: Simplify right side
1,214,677,431.80x = 1,621,234,291,138,972,160 - Step 5: Solve for x
x = 1,621,234,291,138,972,160/1,214,677,431.80 - Step 6: Final answer
x = 1,334,703,558.90
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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.