Finding the Fourth Proportional to 990,509.70, 1,485,764.55 and 242,555.70
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Solution
The fourth proportional to 990,509.70, 1,485,764.55 and 242,555.70 is: 363,833.55
Step by Step Solution
- Step 1: Write the proportion equation
990,509.70 : 1,485,764.55 = 242,555.70 : x - Step 2: Convert to fraction form
990,509.70/1,485,764.55 = 242,555.70/x - Step 3: Cross multiply
990,509.70x = 1,485,764.55 × 242,555.70 - Step 4: Simplify right side
990,509.70x = 360,380,660,460.44 - Step 5: Solve for x
x = 360,380,660,460.44/990,509.70 - Step 6: Final answer
x = 363,833.55
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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.