Finding the Fourth Proportional to 812,356.53, 1,121,087.05 and 449,780.38
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Solution
The fourth proportional to 812,356.53, 1,121,087.05 and 449,780.38 is: 620,716.32
Step by Step Solution
- Step 1: Write the proportion equation
812,356.53 : 1,121,087.05 = 449,780.38 : x - Step 2: Convert to fraction form
812,356.53/1,121,087.05 = 449,780.38/x - Step 3: Cross multiply
812,356.53x = 1,121,087.05 × 449,780.38 - Step 4: Simplify right side
812,356.53x = 504,242,955,434.91 - Step 5: Solve for x
x = 504,242,955,434.91/812,356.53 - Step 6: Final answer
x = 620,716.32
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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.