Finding the Fourth Proportional to 991,228.25, 1,486,837.51 and 281,257.58
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Solution
The fourth proportional to 991,228.25, 1,486,837.51 and 281,257.58 is: 421,884.99
Step by Step Solution
- Step 1: Write the proportion equation
991,228.25 : 1,486,837.51 = 281,257.58 : x - Step 2: Convert to fraction form
991,228.25/1,486,837.51 = 281,257.58/x - Step 3: Cross multiply
991,228.25x = 1,486,837.51 × 281,257.58 - Step 4: Simplify right side
991,228.25x = 418,184,319,915.83 - Step 5: Solve for x
x = 418,184,319,915.83/991,228.25 - Step 6: Final answer
x = 421,884.99
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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.