Finding the Fourth Proportional to 1,912,516.31, 2,639,330.58 and 1,053,107.32
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Solution
The fourth proportional to 1,912,516.31, 2,639,330.58 and 1,053,107.32 is: 1,453,320.08
Step by Step Solution
- Step 1: Write the proportion equation
1,912,516.31 : 2,639,330.58 = 1,053,107.32 : x - Step 2: Convert to fraction form
1,912,516.31/2,639,330.58 = 1,053,107.32/x - Step 3: Cross multiply
1,912,516.31x = 2,639,330.58 × 1,053,107.32 - Step 4: Simplify right side
1,912,516.31x = 2,779,498,353,697.85 - Step 5: Solve for x
x = 2,779,498,353,697.85/1,912,516.31 - Step 6: Final answer
x = 1,453,320.08
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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.