Finding the Fourth Proportional to 689,659.82, 1,034,488.92 and 216,381.68
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Solution
The fourth proportional to 689,659.82, 1,034,488.92 and 216,381.68 is: 324,572.27
Step by Step Solution
- Step 1: Write the proportion equation
689,659.82 : 1,034,488.92 = 216,381.68 : x - Step 2: Convert to fraction form
689,659.82/1,034,488.92 = 216,381.68/x - Step 3: Cross multiply
689,659.82x = 1,034,488.92 × 216,381.68 - Step 4: Simplify right side
689,659.82x = 223,844,450,450.99 - Step 5: Solve for x
x = 223,844,450,450.99/689,659.82 - Step 6: Final answer
x = 324,572.27
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.