Finding the Fourth Proportional to 1,021,416.99, 1,520,067.69 and 987,361.14
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Solution
The fourth proportional to 1,021,416.99, 1,520,067.69 and 987,361.14 is: 1,469,385.96
Step by Step Solution
- Step 1: Write the proportion equation
1,021,416.99 : 1,520,067.69 = 987,361.14 : x - Step 2: Convert to fraction form
1,021,416.99/1,520,067.69 = 987,361.14/x - Step 3: Cross multiply
1,021,416.99x = 1,520,067.69 × 987,361.14 - Step 4: Simplify right side
1,021,416.99x = 1,500,855,775,752.77 - Step 5: Solve for x
x = 1,500,855,775,752.77/1,021,416.99 - Step 6: Final answer
x = 1,469,385.96
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.