Finding the Fourth Proportional to 487,414.09, 672,361.17 and 283,442.59
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Solution
The fourth proportional to 487,414.09, 672,361.17 and 283,442.59 is: 390,993.60
Step by Step Solution
- Step 1: Write the proportion equation
487,414.09 : 672,361.17 = 283,442.59 : x - Step 2: Convert to fraction form
487,414.09/672,361.17 = 283,442.59/x - Step 3: Cross multiply
487,414.09x = 672,361.17 × 283,442.59 - Step 4: Simplify right side
487,414.09x = 190,575,791,440.23 - Step 5: Solve for x
x = 190,575,791,440.23/487,414.09 - Step 6: Final answer
x = 390,993.60
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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.