Finding the Fourth Proportional to 781,074.18, 1,171,189.80 and 354,377.12
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Solution
The fourth proportional to 781,074.18, 1,171,189.80 and 354,377.12 is: 531,374.45
Step by Step Solution
- Step 1: Write the proportion equation
781,074.18 : 1,171,189.80 = 354,377.12 : x - Step 2: Convert to fraction form
781,074.18/1,171,189.80 = 354,377.12/x - Step 3: Cross multiply
781,074.18x = 1,171,189.80 × 354,377.12 - Step 4: Simplify right side
781,074.18x = 415,042,862,441.43 - Step 5: Solve for x
x = 415,042,862,441.43/781,074.18 - Step 6: Final answer
x = 531,374.45
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.