Finding the Fourth Proportional to 992,861,379.84, 1,370,245,483.20 and 741,529,431.84
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Solution
The fourth proportional to 992,861,379.84, 1,370,245,483.20 and 741,529,431.84 is: 1,023,382,896.41
Step by Step Solution
- Step 1: Write the proportion equation
992,861,379.84 : 1,370,245,483.20 = 741,529,431.84 : x - Step 2: Convert to fraction form
992,861,379.84/1,370,245,483.20 = 741,529,431.84/x - Step 3: Cross multiply
992,861,379.84x = 1,370,245,483.20 × 741,529,431.84 - Step 4: Simplify right side
992,861,379.84x = 1,016,077,354,638,622,336 - Step 5: Solve for x
x = 1,016,077,354,638,622,336/992,861,379.84 - Step 6: Final answer
x = 1,023,382,896.41
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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.