Finding the Fourth Proportional to 641,329.28, 884,954.40 and 354,809.60
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Solution
The fourth proportional to 641,329.28, 884,954.40 and 354,809.60 is: 489,592.99
Step by Step Solution
- Step 1: Write the proportion equation
641,329.28 : 884,954.40 = 354,809.60 : x - Step 2: Convert to fraction form
641,329.28/884,954.40 = 354,809.60/x - Step 3: Cross multiply
641,329.28x = 884,954.40 × 354,809.60 - Step 4: Simplify right side
641,329.28x = 313,990,316,682.24 - Step 5: Solve for x
x = 313,990,316,682.24/641,329.28 - Step 6: Final answer
x = 489,592.99
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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.