Finding the Fourth Proportional to 6,138,323.70, 9,207,485.55 and 5,193,539.70
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Solution
The fourth proportional to 6,138,323.70, 9,207,485.55 and 5,193,539.70 is: 7,790,309.55
Step by Step Solution
- Step 1: Write the proportion equation
6,138,323.70 : 9,207,485.55 = 5,193,539.70 : x - Step 2: Convert to fraction form
6,138,323.70/9,207,485.55 = 5,193,539.70/x - Step 3: Cross multiply
6,138,323.70x = 9,207,485.55 × 5,193,539.70 - Step 4: Simplify right side
6,138,323.70x = 47,819,441,741,101.34 - Step 5: Solve for x
x = 47,819,441,741,101.34/6,138,323.70 - Step 6: Final answer
x = 7,790,309.55
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Double scale
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Similar ratio
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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.