Finding the Fourth Proportional to 998,629.75, 1,378,109.06 and 545,920.75
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Solution
The fourth proportional to 998,629.75, 1,378,109.06 and 545,920.75 is: 753,370.64
Step by Step Solution
- Step 1: Write the proportion equation
998,629.75 : 1,378,109.06 = 545,920.75 : x - Step 2: Convert to fraction form
998,629.75/1,378,109.06 = 545,920.75/x - Step 3: Cross multiply
998,629.75x = 1,378,109.06 × 545,920.75 - Step 4: Simplify right side
998,629.75x = 752,338,331,617.00 - Step 5: Solve for x
x = 752,338,331,617.00/998,629.75 - Step 6: Final answer
x = 753,370.64
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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.