Finding the Fourth Proportional to 812,484.11, 1,121,227.36 and 449,907.98
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Solution
The fourth proportional to 812,484.11, 1,121,227.36 and 449,907.98 is: 620,872.61
Step by Step Solution
- Step 1: Write the proportion equation
812,484.11 : 1,121,227.36 = 449,907.98 : x - Step 2: Convert to fraction form
812,484.11/1,121,227.36 = 449,907.98/x - Step 3: Cross multiply
812,484.11x = 1,121,227.36 × 449,907.98 - Step 4: Simplify right side
812,484.11x = 504,449,129,927.43 - Step 5: Solve for x
x = 504,449,129,927.43/812,484.11 - Step 6: Final answer
x = 620,872.61
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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.