Finding the Fourth Proportional to 812,341.80, 1,121,073.12 and 449,805.69
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Solution
The fourth proportional to 812,341.80, 1,121,073.12 and 449,805.69 is: 620,754.80
Step by Step Solution
- Step 1: Write the proportion equation
812,341.80 : 1,121,073.12 = 449,805.69 : x - Step 2: Convert to fraction form
812,341.80/1,121,073.12 = 449,805.69/x - Step 3: Cross multiply
812,341.80x = 1,121,073.12 × 449,805.69 - Step 4: Simplify right side
812,341.80x = 504,265,068,282.05 - Step 5: Solve for x
x = 504,265,068,282.05/812,341.80 - Step 6: Final answer
x = 620,754.80
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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.