Finding the Fourth Proportional to 480,015.70, 720,023.55 and 386,703.70
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Solution
The fourth proportional to 480,015.70, 720,023.55 and 386,703.70 is: 580,055.55
Step by Step Solution
- Step 1: Write the proportion equation
480,015.70 : 720,023.55 = 386,703.70 : x - Step 2: Convert to fraction form
480,015.70/720,023.55 = 386,703.70/x - Step 3: Cross multiply
480,015.70x = 720,023.55 × 386,703.70 - Step 4: Simplify right side
480,015.70x = 278,435,770,872.14 - Step 5: Solve for x
x = 278,435,770,872.14/480,015.70 - Step 6: Final answer
x = 580,055.55
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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.