Finding the Fourth Proportional to 643,452.18, 888,042.75 and 371,519.62
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Solution
The fourth proportional to 643,452.18, 888,042.75 and 371,519.62 is: 512,742.54
Step by Step Solution
- Step 1: Write the proportion equation
643,452.18 : 888,042.75 = 371,519.62 : x - Step 2: Convert to fraction form
643,452.18/888,042.75 = 371,519.62/x - Step 3: Cross multiply
643,452.18x = 888,042.75 × 371,519.62 - Step 4: Simplify right side
643,452.18x = 329,925,300,583.54 - Step 5: Solve for x
x = 329,925,300,583.54/643,452.18 - Step 6: Final answer
x = 512,742.54
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1.5x scale
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.