Finding the Fourth Proportional to 1,912,651.21, 2,639,475.89 and 1,053,214.93
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Solution
The fourth proportional to 1,912,651.21, 2,639,475.89 and 1,053,214.93 is: 1,453,446.09
Step by Step Solution
- Step 1: Write the proportion equation
1,912,651.21 : 2,639,475.89 = 1,053,214.93 : x - Step 2: Convert to fraction form
1,912,651.21/2,639,475.89 = 1,053,214.93/x - Step 3: Cross multiply
1,912,651.21x = 2,639,475.89 × 1,053,214.93 - Step 4: Simplify right side
1,912,651.21x = 2,779,935,414,723.04 - Step 5: Solve for x
x = 2,779,935,414,723.04/1,912,651.21 - Step 6: Final answer
x = 1,453,446.09
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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.