Finding the Fourth Proportional to 991,905.15, 1,368,842.72 and 539,205.87
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Solution
The fourth proportional to 991,905.15, 1,368,842.72 and 539,205.87 is: 744,111.50
Step by Step Solution
- Step 1: Write the proportion equation
991,905.15 : 1,368,842.72 = 539,205.87 : x - Step 2: Convert to fraction form
991,905.15/1,368,842.72 = 539,205.87/x - Step 3: Cross multiply
991,905.15x = 1,368,842.72 × 539,205.87 - Step 4: Simplify right side
991,905.15x = 738,088,027,034.74 - Step 5: Solve for x
x = 738,088,027,034.74/991,905.15 - Step 6: Final answer
x = 744,111.50
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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.