Finding the Fourth Proportional to 678,396.41, 1,017,815.74 and 341,263.07
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Solution
The fourth proportional to 678,396.41, 1,017,815.74 and 341,263.07 is: 512,005.84
Step by Step Solution
- Step 1: Write the proportion equation
678,396.41 : 1,017,815.74 = 341,263.07 : x - Step 2: Convert to fraction form
678,396.41/1,017,815.74 = 341,263.07/x - Step 3: Cross multiply
678,396.41x = 1,017,815.74 × 341,263.07 - Step 4: Simplify right side
678,396.41x = 347,342,918,184.49 - Step 5: Solve for x
x = 347,342,918,184.49/678,396.41 - Step 6: Final answer
x = 512,005.84
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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.