Finding the Fourth Proportional to 691,969.80, 1,037,954.70 and 318,721.80
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Solution
The fourth proportional to 691,969.80, 1,037,954.70 and 318,721.80 is: 478,082.70
Step by Step Solution
- Step 1: Write the proportion equation
691,969.80 : 1,037,954.70 = 318,721.80 : x - Step 2: Convert to fraction form
691,969.80/1,037,954.70 = 318,721.80/x - Step 3: Cross multiply
691,969.80x = 1,037,954.70 × 318,721.80 - Step 4: Simplify right side
691,969.80x = 330,818,790,302.46 - Step 5: Solve for x
x = 330,818,790,302.46/691,969.80 - Step 6: Final answer
x = 478,082.70
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.