Finding the Fourth Proportional to 638,134.90, 880,614.75 and 347,748.99
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Solution
The fourth proportional to 638,134.90, 880,614.75 and 347,748.99 is: 479,887.39
Step by Step Solution
- Step 1: Write the proportion equation
638,134.90 : 880,614.75 = 347,748.99 : x - Step 2: Convert to fraction form
638,134.90/880,614.75 = 347,748.99/x - Step 3: Cross multiply
638,134.90x = 880,614.75 × 347,748.99 - Step 4: Simplify right side
638,134.90x = 306,232,889,891.60 - Step 5: Solve for x
x = 306,232,889,891.60/638,134.90 - Step 6: Final answer
x = 479,887.39
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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.