Finding the Fourth Proportional to 1,421,604.40, 2,129,296.20 and 859,658.80
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Solution
The fourth proportional to 1,421,604.40, 2,129,296.20 and 859,658.80 is: 1,287,607.31
Step by Step Solution
- Step 1: Write the proportion equation
1,421,604.40 : 2,129,296.20 = 859,658.80 : x - Step 2: Convert to fraction form
1,421,604.40/2,129,296.20 = 859,658.80/x - Step 3: Cross multiply
1,421,604.40x = 2,129,296.20 × 859,658.80 - Step 4: Simplify right side
1,421,604.40x = 1,830,468,216,136.56 - Step 5: Solve for x
x = 1,830,468,216,136.56/1,421,604.40 - Step 6: Final answer
x = 1,287,607.31
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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.