Finding the Fourth Proportional to 7,288,781.20, 10,943,021.40 and 4,259,251.60
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Solution
The fourth proportional to 7,288,781.20, 10,943,021.40 and 4,259,251.60 is: 6,394,633.08
Step by Step Solution
- Step 1: Write the proportion equation
7,288,781.20 : 10,943,021.40 = 4,259,251.60 : x - Step 2: Convert to fraction form
7,288,781.20/10,943,021.40 = 4,259,251.60/x - Step 3: Cross multiply
7,288,781.20x = 10,943,021.40 × 4,259,251.60 - Step 4: Simplify right side
7,288,781.20x = 46,609,081,406,784.23 - Step 5: Solve for x
x = 46,609,081,406,784.23/7,288,781.20 - Step 6: Final answer
x = 6,394,633.08
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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.