Finding the Fourth Proportional to 989,222,843.39, 1,365,065,434.55 and 543,183,084.09
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Solution
The fourth proportional to 989,222,843.39, 1,365,065,434.55 and 543,183,084.09 is: 749,558,562.75
Step by Step Solution
- Step 1: Write the proportion equation
989,222,843.39 : 1,365,065,434.55 = 543,183,084.09 : x - Step 2: Convert to fraction form
989,222,843.39/1,365,065,434.55 = 543,183,084.09/x - Step 3: Cross multiply
989,222,843.39x = 1,365,065,434.55 × 543,183,084.09 - Step 4: Simplify right side
989,222,843.39x = 741,480,452,724,883,072 - Step 5: Solve for x
x = 741,480,452,724,883,072/989,222,843.39 - Step 6: Final answer
x = 749,558,562.75
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Double scale
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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.