Finding the Fourth Proportional to 1,386,151.96, 1,912,905.70 and 813,201.88
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Solution
The fourth proportional to 1,386,151.96, 1,912,905.70 and 813,201.88 is: 1,122,227.98
Step by Step Solution
- Step 1: Write the proportion equation
1,386,151.96 : 1,912,905.70 = 813,201.88 : x - Step 2: Convert to fraction form
1,386,151.96/1,912,905.70 = 813,201.88/x - Step 3: Cross multiply
1,386,151.96x = 1,912,905.70 × 813,201.88 - Step 4: Simplify right side
1,386,151.96x = 1,555,578,511,502.72 - Step 5: Solve for x
x = 1,555,578,511,502.72/1,386,151.96 - Step 6: Final answer
x = 1,122,227.98
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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.