Finding the Fourth Proportional to 686,448.17, 1,029,661.21 and 213,133.98
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Solution
The fourth proportional to 686,448.17, 1,029,661.21 and 213,133.98 is: 319,697.54
Step by Step Solution
- Step 1: Write the proportion equation
686,448.17 : 1,029,661.21 = 213,133.98 : x - Step 2: Convert to fraction form
686,448.17/1,029,661.21 = 213,133.98/x - Step 3: Cross multiply
686,448.17x = 1,029,661.21 × 213,133.98 - Step 4: Simplify right side
686,448.17x = 219,455,790,673.25 - Step 5: Solve for x
x = 219,455,790,673.25/686,448.17 - Step 6: Final answer
x = 319,697.54
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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.