Finding the Fourth Proportional to 991,903.40, 1,368,840.30 and 539,204.12
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Solution
The fourth proportional to 991,903.40, 1,368,840.30 and 539,204.12 is: 744,109.08
Step by Step Solution
- Step 1: Write the proportion equation
991,903.40 : 1,368,840.30 = 539,204.12 : x - Step 2: Convert to fraction form
991,903.40/1,368,840.30 = 539,204.12/x - Step 3: Cross multiply
991,903.40x = 1,368,840.30 × 539,204.12 - Step 4: Simplify right side
991,903.40x = 738,084,329,382.04 - Step 5: Solve for x
x = 738,084,329,382.04/991,903.40 - Step 6: Final answer
x = 744,109.08
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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.