Finding the Fourth Proportional to 1,129,760.63, 1,559,081.84 and 620,463.01
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Solution
The fourth proportional to 1,129,760.63, 1,559,081.84 and 620,463.01 is: 856,245.63
Step by Step Solution
- Step 1: Write the proportion equation
1,129,760.63 : 1,559,081.84 = 620,463.01 : x - Step 2: Convert to fraction form
1,129,760.63/1,559,081.84 = 620,463.01/x - Step 3: Cross multiply
1,129,760.63x = 1,559,081.84 × 620,463.01 - Step 4: Simplify right side
1,129,760.63x = 967,352,604,282.72 - Step 5: Solve for x
x = 967,352,604,282.72/1,129,760.63 - Step 6: Final answer
x = 856,245.63
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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.