Finding the Fourth Proportional to 587,609.80, 881,414.70 and 421,721.80
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Solution
The fourth proportional to 587,609.80, 881,414.70 and 421,721.80 is: 632,582.70
Step by Step Solution
- Step 1: Write the proportion equation
587,609.80 : 881,414.70 = 421,721.80 : x - Step 2: Convert to fraction form
587,609.80/881,414.70 = 421,721.80/x - Step 3: Cross multiply
587,609.80x = 881,414.70 × 421,721.80 - Step 4: Simplify right side
587,609.80x = 371,711,793,830.46 - Step 5: Solve for x
x = 371,711,793,830.46/587,609.80 - Step 6: Final answer
x = 632,582.70
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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.