Finding the Fourth Proportional to 991,438.98, 1,368,194.45 and 538,729.98
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Solution
The fourth proportional to 991,438.98, 1,368,194.45 and 538,729.98 is: 743,452.07
Step by Step Solution
- Step 1: Write the proportion equation
991,438.98 : 1,368,194.45 = 538,729.98 : x - Step 2: Convert to fraction form
991,438.98/1,368,194.45 = 538,729.98/x - Step 3: Cross multiply
991,438.98x = 1,368,194.45 × 538,729.98 - Step 4: Simplify right side
991,438.98x = 737,087,365,990.96 - Step 5: Solve for x
x = 737,087,365,990.96/991,438.98 - Step 6: Final answer
x = 743,452.07
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.