Finding the Fourth Proportional to 775,459.13, 1,163,272.12 and 326,225.70
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Solution
The fourth proportional to 775,459.13, 1,163,272.12 and 326,225.70 is: 489,373.65
Step by Step Solution
- Step 1: Write the proportion equation
775,459.13 : 1,163,272.12 = 326,225.70 : x - Step 2: Convert to fraction form
775,459.13/1,163,272.12 = 326,225.70/x - Step 3: Cross multiply
775,459.13x = 1,163,272.12 × 326,225.70 - Step 4: Simplify right side
775,459.13x = 379,489,260,821.92 - Step 5: Solve for x
x = 379,489,260,821.92/775,459.13 - Step 6: Final answer
x = 489,373.65
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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.