Finding the Fourth Proportional to 290,415.70, 435,623.55 and 282,639.70
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Solution
The fourth proportional to 290,415.70, 435,623.55 and 282,639.70 is: 423,959.55
Step by Step Solution
- Step 1: Write the proportion equation
290,415.70 : 435,623.55 = 282,639.70 : x - Step 2: Convert to fraction form
290,415.70/435,623.55 = 282,639.70/x - Step 3: Cross multiply
290,415.70x = 435,623.55 × 282,639.70 - Step 4: Simplify right side
290,415.70x = 123,124,509,484.94 - Step 5: Solve for x
x = 123,124,509,484.94/290,415.70 - Step 6: Final answer
x = 423,959.55
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1.5x scale
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.