Finding the Fourth Proportional to 515,872.80, 772,642.80 and 305,920.80
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Solution
The fourth proportional to 515,872.80, 772,642.80 and 305,920.80 is: 458,189.51
Step by Step Solution
- Step 1: Write the proportion equation
515,872.80 : 772,642.80 = 305,920.80 : x - Step 2: Convert to fraction form
515,872.80/772,642.80 = 305,920.80/x - Step 3: Cross multiply
515,872.80x = 772,642.80 × 305,920.80 - Step 4: Simplify right side
515,872.80x = 236,367,503,490.24 - Step 5: Solve for x
x = 236,367,503,490.24/515,872.80 - Step 6: Final answer
x = 458,189.51
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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.