Finding the Fourth Proportional to 641,148.60, 884,788.68 and 354,678.94
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Solution
The fourth proportional to 641,148.60, 884,788.68 and 354,678.94 is: 489,458.94
Step by Step Solution
- Step 1: Write the proportion equation
641,148.60 : 884,788.68 = 354,678.94 : x - Step 2: Convert to fraction form
641,148.60/884,788.68 = 354,678.94/x - Step 3: Cross multiply
641,148.60x = 884,788.68 × 354,678.94 - Step 4: Simplify right side
641,148.60x = 313,815,911,146.40 - Step 5: Solve for x
x = 313,815,911,146.40/641,148.60 - Step 6: Final answer
x = 489,458.94
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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.