Finding the Fourth Proportional to 1,398,810.74, 1,930,355.82 and 786,963.92
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Solution
The fourth proportional to 1,398,810.74, 1,930,355.82 and 786,963.92 is: 1,086,008.52
Step by Step Solution
- Step 1: Write the proportion equation
1,398,810.74 : 1,930,355.82 = 786,963.92 : x - Step 2: Convert to fraction form
1,398,810.74/1,930,355.82 = 786,963.92/x - Step 3: Cross multiply
1,398,810.74x = 1,930,355.82 × 786,963.92 - Step 4: Simplify right side
1,398,810.74x = 1,519,120,373,450.24 - Step 5: Solve for x
x = 1,519,120,373,450.24/1,398,810.74 - Step 6: Final answer
x = 1,086,008.52
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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.