Finding the Fourth Proportional to 521,440.80, 780,778.80 and 410,848.80
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Solution
The fourth proportional to 521,440.80, 780,778.80 and 410,848.80 is: 615,183.99
Step by Step Solution
- Step 1: Write the proportion equation
521,440.80 : 780,778.80 = 410,848.80 : x - Step 2: Convert to fraction form
521,440.80/780,778.80 = 410,848.80/x - Step 3: Cross multiply
521,440.80x = 780,778.80 × 410,848.80 - Step 4: Simplify right side
521,440.80x = 320,782,033,045.44 - Step 5: Solve for x
x = 320,782,033,045.44/521,440.80 - Step 6: Final answer
x = 615,183.99
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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.