Finding the Fourth Proportional to 911,057.70, 1,366,554.15 and 412,421.70
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Solution
The fourth proportional to 911,057.70, 1,366,554.15 and 412,421.70 is: 618,617.88
Step by Step Solution
- Step 1: Write the proportion equation
911,057.70 : 1,366,554.15 = 412,421.70 : x - Step 2: Convert to fraction form
911,057.70/1,366,554.15 = 412,421.70/x - Step 3: Cross multiply
911,057.70x = 1,366,554.15 × 412,421.70 - Step 4: Simplify right side
911,057.70x = 563,596,585,685.06 - Step 5: Solve for x
x = 563,596,585,685.06/911,057.70 - Step 6: Final answer
x = 618,617.88
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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.