Finding the Fourth Proportional to 638,188.48, 880,705.92 and 351,718.96
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Solution
The fourth proportional to 638,188.48, 880,705.92 and 351,718.96 is: 485,375.37
Step by Step Solution
- Step 1: Write the proportion equation
638,188.48 : 880,705.92 = 351,718.96 : x - Step 2: Convert to fraction form
638,188.48/880,705.92 = 351,718.96/x - Step 3: Cross multiply
638,188.48x = 880,705.92 × 351,718.96 - Step 4: Simplify right side
638,188.48x = 309,760,970,248.24 - Step 5: Solve for x
x = 309,760,970,248.24/638,188.48 - Step 6: Final answer
x = 485,375.37
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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.