Finding the Fourth Proportional to 2,086,289.70, 3,129,888.15 and 1,188,161.70
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Solution
The fourth proportional to 2,086,289.70, 3,129,888.15 and 1,188,161.70 is: 1,782,500.88
Step by Step Solution
- Step 1: Write the proportion equation
2,086,289.70 : 3,129,888.15 = 1,188,161.70 : x - Step 2: Convert to fraction form
2,086,289.70/3,129,888.15 = 1,188,161.70/x - Step 3: Cross multiply
2,086,289.70x = 3,129,888.15 × 1,188,161.70 - Step 4: Simplify right side
2,086,289.70x = 3,718,813,225,113.86 - Step 5: Solve for x
x = 3,718,813,225,113.86/2,086,289.70 - Step 6: Final answer
x = 1,782,500.88
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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.