Finding the Fourth Proportional to 1,108,135.99, 1,529,161.88 and 642,953.90
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Solution
The fourth proportional to 1,108,135.99, 1,529,161.88 and 642,953.90 is: 887,238.21
Step by Step Solution
- Step 1: Write the proportion equation
1,108,135.99 : 1,529,161.88 = 642,953.90 : x - Step 2: Convert to fraction form
1,108,135.99/1,529,161.88 = 642,953.90/x - Step 3: Cross multiply
1,108,135.99x = 1,529,161.88 × 642,953.90 - Step 4: Simplify right side
1,108,135.99x = 983,180,595,085.47 - Step 5: Solve for x
x = 983,180,595,085.47/1,108,135.99 - Step 6: Final answer
x = 887,238.21
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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.