Finding the Fourth Proportional to 641,644.87, 885,564.84 and 369,661.03
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Solution
The fourth proportional to 641,644.87, 885,564.84 and 369,661.03 is: 510,186.91
Step by Step Solution
- Step 1: Write the proportion equation
641,644.87 : 885,564.84 = 369,661.03 : x - Step 2: Convert to fraction form
641,644.87/885,564.84 = 369,661.03/x - Step 3: Cross multiply
641,644.87x = 885,564.84 × 369,661.03 - Step 4: Simplify right side
641,644.87x = 327,358,810,886.19 - Step 5: Solve for x
x = 327,358,810,886.19/641,644.87 - Step 6: Final answer
x = 510,186.91
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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.