Finding the Fourth Proportional to 815,945.38, 1,125,642.36 and 543,748.12
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Solution
The fourth proportional to 815,945.38, 1,125,642.36 and 543,748.12 is: 750,130.99
Step by Step Solution
- Step 1: Write the proportion equation
815,945.38 : 1,125,642.36 = 543,748.12 : x - Step 2: Convert to fraction form
815,945.38/1,125,642.36 = 543,748.12/x - Step 3: Cross multiply
815,945.38x = 1,125,642.36 × 543,748.12 - Step 4: Simplify right side
815,945.38x = 612,065,917,042.36 - Step 5: Solve for x
x = 612,065,917,042.36/815,945.38 - Step 6: Final answer
x = 750,130.99
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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.