Finding the Fourth Proportional to 859,563.20, 1,289,344.80 and 219,865.70
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Solution
The fourth proportional to 859,563.20, 1,289,344.80 and 219,865.70 is: 329,798.55
Step by Step Solution
- Step 1: Write the proportion equation
859,563.20 : 1,289,344.80 = 219,865.70 : x - Step 2: Convert to fraction form
859,563.20/1,289,344.80 = 219,865.70/x - Step 3: Cross multiply
859,563.20x = 1,289,344.80 × 219,865.70 - Step 4: Simplify right side
859,563.20x = 283,482,696,993.36 - Step 5: Solve for x
x = 283,482,696,993.36/859,563.20 - Step 6: Final answer
x = 329,798.55
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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.