Finding the Fourth Proportional to 438,310.80, 657,725.40 and 288,982.80
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Solution
The fourth proportional to 438,310.80, 657,725.40 and 288,982.80 is: 433,645.09
Step by Step Solution
- Step 1: Write the proportion equation
438,310.80 : 657,725.40 = 288,982.80 : x - Step 2: Convert to fraction form
438,310.80/657,725.40 = 288,982.80/x - Step 3: Cross multiply
438,310.80x = 657,725.40 × 288,982.80 - Step 4: Simplify right side
438,310.80x = 190,071,327,723.12 - Step 5: Solve for x
x = 190,071,327,723.12/438,310.80 - Step 6: Final answer
x = 433,645.09
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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.