Finding the Fourth Proportional to 1,209,037.88, 1,668,472.21 and 665,161.99
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Solution
The fourth proportional to 1,209,037.88, 1,668,472.21 and 665,161.99 is: 917,923.51
Step by Step Solution
- Step 1: Write the proportion equation
1,209,037.88 : 1,668,472.21 = 665,161.99 : x - Step 2: Convert to fraction form
1,209,037.88/1,668,472.21 = 665,161.99/x - Step 3: Cross multiply
1,209,037.88x = 1,668,472.21 × 665,161.99 - Step 4: Simplify right side
1,209,037.88x = 1,109,804,295,463.30 - Step 5: Solve for x
x = 1,109,804,295,463.30/1,209,037.88 - Step 6: Final answer
x = 917,923.51
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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.