Finding the Fourth Proportional to 1,288,939.92, 1,778,450.76 and 779,631.36
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Solution
The fourth proportional to 1,288,939.92, 1,778,450.76 and 779,631.36 is: 1,075,718.09
Step by Step Solution
- Step 1: Write the proportion equation
1,288,939.92 : 1,778,450.76 = 779,631.36 : x - Step 2: Convert to fraction form
1,288,939.92/1,778,450.76 = 779,631.36/x - Step 3: Cross multiply
1,288,939.92x = 1,778,450.76 × 779,631.36 - Step 4: Simplify right side
1,288,939.92x = 1,386,535,984,711.83 - Step 5: Solve for x
x = 1,386,535,984,711.83/1,288,939.92 - Step 6: Final answer
x = 1,075,718.09
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.