Finding the Fourth Proportional to 991,575.63, 1,368,389.12 and 538,866.99
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Solution
The fourth proportional to 991,575.63, 1,368,389.12 and 538,866.99 is: 743,644.46
Step by Step Solution
- Step 1: Write the proportion equation
991,575.63 : 1,368,389.12 = 538,866.99 : x - Step 2: Convert to fraction form
991,575.63/1,368,389.12 = 538,866.99/x - Step 3: Cross multiply
991,575.63x = 1,368,389.12 × 538,866.99 - Step 4: Simplify right side
991,575.63x = 737,379,723,548.81 - Step 5: Solve for x
x = 737,379,723,548.81/991,575.63 - Step 6: Final answer
x = 743,644.46
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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.