Finding the Fourth Proportional to 509,905.90, 764,530.53 and 438,850.18
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Solution
The fourth proportional to 509,905.90, 764,530.53 and 438,850.18 is: 657,992.70
Step by Step Solution
- Step 1: Write the proportion equation
509,905.90 : 764,530.53 = 438,850.18 : x - Step 2: Convert to fraction form
509,905.90/764,530.53 = 438,850.18/x - Step 3: Cross multiply
509,905.90x = 764,530.53 × 438,850.18 - Step 4: Simplify right side
509,905.90x = 335,514,360,706.00 - Step 5: Solve for x
x = 335,514,360,706.00/509,905.90 - Step 6: Final answer
x = 657,992.70
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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.