Finding the Fourth Proportional to 1,420,406.44, 1,960,149.21 and 775,827.07
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Solution
The fourth proportional to 1,420,406.44, 1,960,149.21 and 775,827.07 is: 1,070,634.98
Step by Step Solution
- Step 1: Write the proportion equation
1,420,406.44 : 1,960,149.21 = 775,827.07 : x - Step 2: Convert to fraction form
1,420,406.44/1,960,149.21 = 775,827.07/x - Step 3: Cross multiply
1,420,406.44x = 1,960,149.21 × 775,827.07 - Step 4: Simplify right side
1,420,406.44x = 1,520,736,818,357.11 - Step 5: Solve for x
x = 1,520,736,818,357.11/1,420,406.44 - Step 6: Final answer
x = 1,070,634.98
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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.