Finding the Fourth Proportional to 669,015.75, 923,122.64 and 378,625.95
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Solution
The fourth proportional to 669,015.75, 923,122.64 and 378,625.95 is: 522,436.41
Step by Step Solution
- Step 1: Write the proportion equation
669,015.75 : 923,122.64 = 378,625.95 : x - Step 2: Convert to fraction form
669,015.75/923,122.64 = 378,625.95/x - Step 3: Cross multiply
669,015.75x = 923,122.64 × 378,625.95 - Step 4: Simplify right side
669,015.75x = 349,518,184,643.38 - Step 5: Solve for x
x = 349,518,184,643.38/669,015.75 - Step 6: Final answer
x = 522,436.41
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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.