Finding the Fourth Proportional to 442,742.40, 664,113.58 and 421,230.53
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Solution
The fourth proportional to 442,742.40, 664,113.58 and 421,230.53 is: 631,845.78
Step by Step Solution
- Step 1: Write the proportion equation
442,742.40 : 664,113.58 = 421,230.53 : x - Step 2: Convert to fraction form
442,742.40/664,113.58 = 421,230.53/x - Step 3: Cross multiply
442,742.40x = 664,113.58 × 421,230.53 - Step 4: Simplify right side
442,742.40x = 279,744,915,890.81 - Step 5: Solve for x
x = 279,744,915,890.81/442,742.40 - Step 6: Final answer
x = 631,845.78
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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.