Finding the Fourth Proportional to 681,497.70, 1,022,246.55 and 208,121.55
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Solution
The fourth proportional to 681,497.70, 1,022,246.55 and 208,121.55 is: 312,182.33
Step by Step Solution
- Step 1: Write the proportion equation
681,497.70 : 1,022,246.55 = 208,121.55 : x - Step 2: Convert to fraction form
681,497.70/1,022,246.55 = 208,121.55/x - Step 3: Cross multiply
681,497.70x = 1,022,246.55 × 208,121.55 - Step 4: Simplify right side
681,497.70x = 212,751,536,468.15 - Step 5: Solve for x
x = 212,751,536,468.15/681,497.70 - Step 6: Final answer
x = 312,182.33
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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.