Finding the Fourth Proportional to 1,057,744,291.20, 1,586,616,436.80 and 888,438,998.40
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Solution
The fourth proportional to 1,057,744,291.20, 1,586,616,436.80 and 888,438,998.40 is: 1,332,658,497.60
Step by Step Solution
- Step 1: Write the proportion equation
1,057,744,291.20 : 1,586,616,436.80 = 888,438,998.40 : x - Step 2: Convert to fraction form
1,057,744,291.20/1,586,616,436.80 = 888,438,998.40/x - Step 3: Cross multiply
1,057,744,291.20x = 1,586,616,436.80 × 888,438,998.40 - Step 4: Simplify right side
1,057,744,291.20x = 1,409,611,917,955,568,896 - Step 5: Solve for x
x = 1,409,611,917,955,568,896/1,057,744,291.20 - Step 6: Final answer
x = 1,332,658,497.60
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Double scale
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Similar ratio
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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.