Finding the Fourth Proportional to 541,915.68, 747,690.90 and 312,454.92
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Solution
The fourth proportional to 541,915.68, 747,690.90 and 312,454.92 is: 431,099.72
Step by Step Solution
- Step 1: Write the proportion equation
541,915.68 : 747,690.90 = 312,454.92 : x - Step 2: Convert to fraction form
541,915.68/747,690.90 = 312,454.92/x - Step 3: Cross multiply
541,915.68x = 747,690.90 × 312,454.92 - Step 4: Simplify right side
541,915.68x = 233,619,700,344.23 - Step 5: Solve for x
x = 233,619,700,344.23/541,915.68 - Step 6: Final answer
x = 431,099.72
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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.