Finding the Fourth Proportional to 2,157,287,743.74, 2,976,209,993.25 and 1,252,889,716.98
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Solution
The fourth proportional to 2,157,287,743.74, 2,976,209,993.25 and 1,252,889,716.98 is: 1,728,495,842.49
Step by Step Solution
- Step 1: Write the proportion equation
2,157,287,743.74 : 2,976,209,993.25 = 1,252,889,716.98 : x - Step 2: Convert to fraction form
2,157,287,743.74/2,976,209,993.25 = 1,252,889,716.98/x - Step 3: Cross multiply
2,157,287,743.74x = 2,976,209,993.25 × 1,252,889,716.98 - Step 4: Simplify right side
2,157,287,743.74x = 3,728,862,896,116,040,192 - Step 5: Solve for x
x = 3,728,862,896,116,040,192/2,157,287,743.74 - Step 6: Final answer
x = 1,728,495,842.49
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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.