Finding the Fourth Proportional to 2,021,825.76, 2,791,240.24 and 1,378,191.68
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Solution
The fourth proportional to 2,021,825.76, 2,791,240.24 and 1,378,191.68 is: 1,902,668.45
Step by Step Solution
- Step 1: Write the proportion equation
2,021,825.76 : 2,791,240.24 = 1,378,191.68 : x - Step 2: Convert to fraction form
2,021,825.76/2,791,240.24 = 1,378,191.68/x - Step 3: Cross multiply
2,021,825.76x = 2,791,240.24 × 1,378,191.68 - Step 4: Simplify right side
2,021,825.76x = 3,846,864,075,649.20 - Step 5: Solve for x
x = 3,846,864,075,649.20/2,021,825.76 - Step 6: Final answer
x = 1,902,668.45
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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.