Finding the Fourth Proportional to 3,581,993.70, 5,372,990.55 and 3,115,433.70
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Solution
The fourth proportional to 3,581,993.70, 5,372,990.55 and 3,115,433.70 is: 4,673,150.55
Step by Step Solution
- Step 1: Write the proportion equation
3,581,993.70 : 5,372,990.55 = 3,115,433.70 : x - Step 2: Convert to fraction form
3,581,993.70/5,372,990.55 = 3,115,433.70/x - Step 3: Cross multiply
3,581,993.70x = 5,372,990.55 × 3,115,433.70 - Step 4: Simplify right side
3,581,993.70x = 16,739,195,829,251.54 - Step 5: Solve for x
x = 16,739,195,829,251.54/3,581,993.70 - Step 6: Final answer
x = 4,673,150.55
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Double scale
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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.