Finding the Fourth Proportional to 812,729.93, 1,121,554.94 and 445,204.13
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Solution
The fourth proportional to 812,729.93, 1,121,554.94 and 445,204.13 is: 614,374.92
Step by Step Solution
- Step 1: Write the proportion equation
812,729.93 : 1,121,554.94 = 445,204.13 : x - Step 2: Convert to fraction form
812,729.93/1,121,554.94 = 445,204.13/x - Step 3: Cross multiply
812,729.93x = 1,121,554.94 × 445,204.13 - Step 4: Simplify right side
812,729.93x = 499,320,883,476.11 - Step 5: Solve for x
x = 499,320,883,476.11/812,729.93 - Step 6: Final answer
x = 614,374.92
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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.