Finding the Fourth Proportional to 1,340,474.80, 1,849,238.64 and 1,187,668.96
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Solution
The fourth proportional to 1,340,474.80, 1,849,238.64 and 1,187,668.96 is: 1,638,436.87
Step by Step Solution
- Step 1: Write the proportion equation
1,340,474.80 : 1,849,238.64 = 1,187,668.96 : x - Step 2: Convert to fraction form
1,340,474.80/1,849,238.64 = 1,187,668.96/x - Step 3: Cross multiply
1,340,474.80x = 1,849,238.64 × 1,187,668.96 - Step 4: Simplify right side
1,340,474.80x = 2,196,283,332,360.61 - Step 5: Solve for x
x = 2,196,283,332,360.61/1,340,474.80 - Step 6: Final answer
x = 1,638,436.87
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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.