Finding the Fourth Proportional to 1,278,882.96, 1,917,909.12 and 425,725.44
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Solution
The fourth proportional to 1,278,882.96, 1,917,909.12 and 425,725.44 is: 638,449.90
Step by Step Solution
- Step 1: Write the proportion equation
1,278,882.96 : 1,917,909.12 = 425,725.44 : x - Step 2: Convert to fraction form
1,278,882.96/1,917,909.12 = 425,725.44/x - Step 3: Cross multiply
1,278,882.96x = 1,917,909.12 × 425,725.44 - Step 4: Simplify right side
1,278,882.96x = 816,502,703,992.01 - Step 5: Solve for x
x = 816,502,703,992.01/1,278,882.96 - Step 6: Final answer
x = 638,449.90
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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.