Finding the Fourth Proportional to 638,168.77, 880,691.36 and 351,707.31
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Solution
The fourth proportional to 638,168.77, 880,691.36 and 351,707.31 is: 485,366.26
Step by Step Solution
- Step 1: Write the proportion equation
638,168.77 : 880,691.36 = 351,707.31 : x - Step 2: Convert to fraction form
638,168.77/880,691.36 = 351,707.31/x - Step 3: Cross multiply
638,168.77x = 880,691.36 × 351,707.31 - Step 4: Simplify right side
638,168.77x = 309,745,587,407.31 - Step 5: Solve for x
x = 309,745,587,407.31/638,168.77 - Step 6: Final answer
x = 485,366.26
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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.