Finding the Fourth Proportional to 5,415,025.80, 8,122,538.70 and 5,257,561.80
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Solution
The fourth proportional to 5,415,025.80, 8,122,538.70 and 5,257,561.80 is: 7,886,342.70
Step by Step Solution
- Step 1: Write the proportion equation
5,415,025.80 : 8,122,538.70 = 5,257,561.80 : x - Step 2: Convert to fraction form
5,415,025.80/8,122,538.70 = 5,257,561.80/x - Step 3: Cross multiply
5,415,025.80x = 8,122,538.70 × 5,257,561.80 - Step 4: Simplify right side
5,415,025.80x = 42,704,749,188,141.66 - Step 5: Solve for x
x = 42,704,749,188,141.66/5,415,025.80 - Step 6: Final answer
x = 7,886,342.70
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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.