Finding the Fourth Proportional to 487,639.70, 731,459.55 and 408,907.70
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Solution
The fourth proportional to 487,639.70, 731,459.55 and 408,907.70 is: 613,361.55
Step by Step Solution
- Step 1: Write the proportion equation
487,639.70 : 731,459.55 = 408,907.70 : x - Step 2: Convert to fraction form
487,639.70/731,459.55 = 408,907.70/x - Step 3: Cross multiply
487,639.70x = 731,459.55 × 408,907.70 - Step 4: Simplify right side
487,639.70x = 299,099,442,233.54 - Step 5: Solve for x
x = 299,099,442,233.54/487,639.70 - Step 6: Final answer
x = 613,361.55
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Similar ratio
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1.5x scale
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.