Finding the Fourth Proportional to 790,998, 1,186,915.35 and 431,428.44
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Solution
The fourth proportional to 790,998, 1,186,915.35 and 431,428.44 is: 647,370.84
Step by Step Solution
- Step 1: Write the proportion equation
790,998 : 1,186,915.35 = 431,428.44 : x - Step 2: Convert to fraction form
790,998/1,186,915.35 = 431,428.44/x - Step 3: Cross multiply
790,998x = 1,186,915.35 × 431,428.44 - Step 4: Simplify right side
790,998x = 512,069,037,862.55 - Step 5: Solve for x
x = 512,069,037,862.55/790,998 - Step 6: Final answer
x = 647,370.84
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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.