Finding the Fourth Proportional to 998,858.09, 1,378,429.49 and 546,149.09
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Solution
The fourth proportional to 998,858.09, 1,378,429.49 and 546,149.09 is: 753,688.66
Step by Step Solution
- Step 1: Write the proportion equation
998,858.09 : 1,378,429.49 = 546,149.09 : x - Step 2: Convert to fraction form
998,858.09/1,378,429.49 = 546,149.09/x - Step 3: Cross multiply
998,858.09x = 1,378,429.49 × 546,149.09 - Step 4: Simplify right side
998,858.09x = 752,828,016,404.11 - Step 5: Solve for x
x = 752,828,016,404.11/998,858.09 - Step 6: Final answer
x = 753,688.66
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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.