Finding the Fourth Proportional to 859,611.20, 1,289,416.80 and 219,913.70
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Solution
The fourth proportional to 859,611.20, 1,289,416.80 and 219,913.70 is: 329,870.55
Step by Step Solution
- Step 1: Write the proportion equation
859,611.20 : 1,289,416.80 = 219,913.70 : x - Step 2: Convert to fraction form
859,611.20/1,289,416.80 = 219,913.70/x - Step 3: Cross multiply
859,611.20x = 1,289,416.80 × 219,913.70 - Step 4: Simplify right side
859,611.20x = 283,560,419,330.16 - Step 5: Solve for x
x = 283,560,419,330.16/859,611.20 - Step 6: Final answer
x = 329,870.55
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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.