Finding the Fourth Proportional to 1,421,827.40, 2,131,704.30 and 579,945.80
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Solution
The fourth proportional to 1,421,827.40, 2,131,704.30 and 579,945.80 is: 869,495.80
Step by Step Solution
- Step 1: Write the proportion equation
1,421,827.40 : 2,131,704.30 = 579,945.80 : x - Step 2: Convert to fraction form
1,421,827.40/2,131,704.30 = 579,945.80/x - Step 3: Cross multiply
1,421,827.40x = 2,131,704.30 × 579,945.80 - Step 4: Simplify right side
1,421,827.40x = 1,236,272,955,626.94 - Step 5: Solve for x
x = 1,236,272,955,626.94/1,421,827.40 - Step 6: Final answer
x = 869,495.80
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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.