Finding the Fourth Proportional to 693,638.87, 1,039,748.84 and 351,448.41
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Solution
The fourth proportional to 693,638.87, 1,039,748.84 and 351,448.41 is: 526,813.15
Step by Step Solution
- Step 1: Write the proportion equation
693,638.87 : 1,039,748.84 = 351,448.41 : x - Step 2: Convert to fraction form
693,638.87/1,039,748.84 = 351,448.41/x - Step 3: Cross multiply
693,638.87x = 1,039,748.84 × 351,448.41 - Step 4: Simplify right side
693,638.87x = 365,418,074,860.10 - Step 5: Solve for x
x = 365,418,074,860.10/693,638.87 - Step 6: Final answer
x = 526,813.15
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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.