Finding the Fourth Proportional to 782,631.36, 1,179,277.94 and 643,591.02
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Solution
The fourth proportional to 782,631.36, 1,179,277.94 and 643,591.02 is: 969,770.35
Step by Step Solution
- Step 1: Write the proportion equation
782,631.36 : 1,179,277.94 = 643,591.02 : x - Step 2: Convert to fraction form
782,631.36/1,179,277.94 = 643,591.02/x - Step 3: Cross multiply
782,631.36x = 1,179,277.94 × 643,591.02 - Step 4: Simplify right side
782,631.36x = 758,972,689,050.14 - Step 5: Solve for x
x = 758,972,689,050.14/782,631.36 - Step 6: Final answer
x = 969,770.35
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.