Finding the Fourth Proportional to 991,433.81, 1,368,186.86 and 538,724.81
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Solution
The fourth proportional to 991,433.81, 1,368,186.86 and 538,724.81 is: 743,444.70
Step by Step Solution
- Step 1: Write the proportion equation
991,433.81 : 1,368,186.86 = 538,724.81 : x - Step 2: Convert to fraction form
991,433.81/1,368,186.86 = 538,724.81/x - Step 3: Cross multiply
991,433.81x = 1,368,186.86 × 538,724.81 - Step 4: Simplify right side
991,433.81x = 737,076,210,965.28 - Step 5: Solve for x
x = 737,076,210,965.28/991,433.81 - Step 6: Final answer
x = 743,444.70
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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.