Finding the Fourth Proportional to 2,279,701.68, 3,145,976.87 and 1,247,190.77
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Solution
The fourth proportional to 2,279,701.68, 3,145,976.87 and 1,247,190.77 is: 1,721,116.99
Step by Step Solution
- Step 1: Write the proportion equation
2,279,701.68 : 3,145,976.87 = 1,247,190.77 : x - Step 2: Convert to fraction form
2,279,701.68/3,145,976.87 = 1,247,190.77/x - Step 3: Cross multiply
2,279,701.68x = 3,145,976.87 × 1,247,190.77 - Step 4: Simplify right side
2,279,701.68x = 3,923,633,292,931.65 - Step 5: Solve for x
x = 3,923,633,292,931.65/2,279,701.68 - Step 6: Final answer
x = 1,721,116.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.