Finding the Fourth Proportional to 991,382.40, 1,368,111.12 and 561,742.08
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Solution
The fourth proportional to 991,382.40, 1,368,111.12 and 561,742.08 is: 775,206.00
Step by Step Solution
- Step 1: Write the proportion equation
991,382.40 : 1,368,111.12 = 561,742.08 : x - Step 2: Convert to fraction form
991,382.40/1,368,111.12 = 561,742.08/x - Step 3: Cross multiply
991,382.40x = 1,368,111.12 × 561,742.08 - Step 4: Simplify right side
991,382.40x = 768,525,586,219.93 - Step 5: Solve for x
x = 768,525,586,219.93/991,382.40 - Step 6: Final answer
x = 775,206.00
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.