Finding the Fourth Proportional to 763,938.20, 1,145,129.70 and 448,232.60
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Solution
The fourth proportional to 763,938.20, 1,145,129.70 and 448,232.60 is: 671,892.65
Step by Step Solution
- Step 1: Write the proportion equation
763,938.20 : 1,145,129.70 = 448,232.60 : x - Step 2: Convert to fraction form
763,938.20/1,145,129.70 = 448,232.60/x - Step 3: Cross multiply
763,938.20x = 1,145,129.70 × 448,232.60 - Step 4: Simplify right side
763,938.20x = 513,284,462,768.22 - Step 5: Solve for x
x = 513,284,462,768.22/763,938.20 - Step 6: Final answer
x = 671,892.65
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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.