Finding the Fourth Proportional to 663,639.05, 915,899.63 and 377,202.18
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Solution
The fourth proportional to 663,639.05, 915,899.63 and 377,202.18 is: 520,583.20
Step by Step Solution
- Step 1: Write the proportion equation
663,639.05 : 915,899.63 = 377,202.18 : x - Step 2: Convert to fraction form
663,639.05/915,899.63 = 377,202.18/x - Step 3: Cross multiply
663,639.05x = 915,899.63 × 377,202.18 - Step 4: Simplify right side
663,639.05x = 345,479,335,211.18 - Step 5: Solve for x
x = 345,479,335,211.18/663,639.05 - Step 6: Final answer
x = 520,583.20
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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.