Finding the Fourth Proportional to 3,320,103.20, 4,980,154.80 and 3,180,135.20
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Solution
The fourth proportional to 3,320,103.20, 4,980,154.80 and 3,180,135.20 is: 4,770,202.80
Step by Step Solution
- Step 1: Write the proportion equation
3,320,103.20 : 4,980,154.80 = 3,180,135.20 : x - Step 2: Convert to fraction form
3,320,103.20/4,980,154.80 = 3,180,135.20/x - Step 3: Cross multiply
3,320,103.20x = 4,980,154.80 × 3,180,135.20 - Step 4: Simplify right side
3,320,103.20x = 15,837,565,580,928.96 - Step 5: Solve for x
x = 15,837,565,580,928.96/3,320,103.20 - Step 6: Final answer
x = 4,770,202.80
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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.