Finding the Fourth Proportional to 430,120.80, 645,310.80 and 305,704.80
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Solution
The fourth proportional to 430,120.80, 645,310.80 and 305,704.80 is: 458,649.31
Step by Step Solution
- Step 1: Write the proportion equation
430,120.80 : 645,310.80 = 305,704.80 : x - Step 2: Convert to fraction form
430,120.80/645,310.80 = 305,704.80/x - Step 3: Cross multiply
430,120.80x = 645,310.80 × 305,704.80 - Step 4: Simplify right side
430,120.80x = 197,274,609,051.84 - Step 5: Solve for x
x = 197,274,609,051.84/430,120.80 - Step 6: Final answer
x = 458,649.31
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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.