Finding the Fourth Proportional to 519,415.20, 779,122.80 and 494,920.80
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Solution
The fourth proportional to 519,415.20, 779,122.80 and 494,920.80 is: 742,381.20
Step by Step Solution
- Step 1: Write the proportion equation
519,415.20 : 779,122.80 = 494,920.80 : x - Step 2: Convert to fraction form
519,415.20/779,122.80 = 494,920.80/x - Step 3: Cross multiply
519,415.20x = 779,122.80 × 494,920.80 - Step 4: Simplify right side
519,415.20x = 385,604,079,474.24 - Step 5: Solve for x
x = 385,604,079,474.24/519,415.20 - Step 6: Final answer
x = 742,381.20
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Similar ratio
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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.