Finding the Fourth Proportional to 1,115,703.87, 1,540,412.82 and 857,120.28
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Solution
The fourth proportional to 1,115,703.87, 1,540,412.82 and 857,120.28 is: 1,183,395.62
Step by Step Solution
- Step 1: Write the proportion equation
1,115,703.87 : 1,540,412.82 = 857,120.28 : x - Step 2: Convert to fraction form
1,115,703.87/1,540,412.82 = 857,120.28/x - Step 3: Cross multiply
1,115,703.87x = 1,540,412.82 × 857,120.28 - Step 4: Simplify right side
1,115,703.87x = 1,320,319,067,593.99 - Step 5: Solve for x
x = 1,320,319,067,593.99/1,115,703.87 - Step 6: Final answer
x = 1,183,395.62
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.