Finding the Fourth Proportional to 1,912,657.75, 2,639,467.70 and 1,053,215.96
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Solution
The fourth proportional to 1,912,657.75, 2,639,467.70 and 1,053,215.96 is: 1,453,438.03
Step by Step Solution
- Step 1: Write the proportion equation
1,912,657.75 : 2,639,467.70 = 1,053,215.96 : x - Step 2: Convert to fraction form
1,912,657.75/2,639,467.70 = 1,053,215.96/x - Step 3: Cross multiply
1,912,657.75x = 2,639,467.70 × 1,053,215.96 - Step 4: Simplify right side
1,912,657.75x = 2,779,929,507,544.49 - Step 5: Solve for x
x = 2,779,929,507,544.49/1,912,657.75 - Step 6: Final answer
x = 1,453,438.03
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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.