Finding the Fourth Proportional to 714,238.07, 985,676.96 and 391,959.70
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Solution
The fourth proportional to 714,238.07, 985,676.96 and 391,959.70 is: 540,919.99
Step by Step Solution
- Step 1: Write the proportion equation
714,238.07 : 985,676.96 = 391,959.70 : x - Step 2: Convert to fraction form
714,238.07/985,676.96 = 391,959.70/x - Step 3: Cross multiply
714,238.07x = 985,676.96 × 391,959.70 - Step 4: Simplify right side
714,238.07x = 386,345,644,054.22 - Step 5: Solve for x
x = 386,345,644,054.22/714,238.07 - Step 6: Final answer
x = 540,919.99
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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.