Finding the Fourth Proportional to 812,467.90, 1,121,191.99 and 449,883.97
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Solution
The fourth proportional to 812,467.90, 1,121,191.99 and 449,883.97 is: 620,832.29
Step by Step Solution
- Step 1: Write the proportion equation
812,467.90 : 1,121,191.99 = 449,883.97 : x - Step 2: Convert to fraction form
812,467.90/1,121,191.99 = 449,883.97/x - Step 3: Cross multiply
812,467.90x = 1,121,191.99 × 449,883.97 - Step 4: Simplify right side
812,467.90x = 504,406,303,593.40 - Step 5: Solve for x
x = 504,406,303,593.40/812,467.90 - Step 6: Final answer
x = 620,832.29
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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.