Finding the Fourth Proportional to 2,119,738.60, 3,174,942.30 and 1,276,820.20
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Solution
The fourth proportional to 2,119,738.60, 3,174,942.30 and 1,276,820.20 is: 1,912,419.99
Step by Step Solution
- Step 1: Write the proportion equation
2,119,738.60 : 3,174,942.30 = 1,276,820.20 : x - Step 2: Convert to fraction form
2,119,738.60/3,174,942.30 = 1,276,820.20/x - Step 3: Cross multiply
2,119,738.60x = 3,174,942.30 × 1,276,820.20 - Step 4: Simplify right side
2,119,738.60x = 4,053,830,462,474.46 - Step 5: Solve for x
x = 4,053,830,462,474.46/2,119,738.60 - Step 6: Final answer
x = 1,912,419.99
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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.