Finding the Fourth Proportional to 3,138,941.16, 4,331,439.14 and 1,761,969.32
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Solution
The fourth proportional to 3,138,941.16, 4,331,439.14 and 1,761,969.32 is: 2,431,349.45
Step by Step Solution
- Step 1: Write the proportion equation
3,138,941.16 : 4,331,439.14 = 1,761,969.32 : x - Step 2: Convert to fraction form
3,138,941.16/4,331,439.14 = 1,761,969.32/x - Step 3: Cross multiply
3,138,941.16x = 4,331,439.14 × 1,761,969.32 - Step 4: Simplify right side
3,138,941.16x = 7,631,862,876,127.19 - Step 5: Solve for x
x = 7,631,862,876,127.19/3,138,941.16 - Step 6: Final answer
x = 2,431,349.45
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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.