Finding the Fourth Proportional to 745,374.20, 1,118,178.94 and 318,912.80
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Solution
The fourth proportional to 745,374.20, 1,118,178.94 and 318,912.80 is: 478,419.52
Step by Step Solution
- Step 1: Write the proportion equation
745,374.20 : 1,118,178.94 = 318,912.80 : x - Step 2: Convert to fraction form
745,374.20/1,118,178.94 = 318,912.80/x - Step 3: Cross multiply
745,374.20x = 1,118,178.94 × 318,912.80 - Step 4: Simplify right side
745,374.20x = 356,601,570,268.26 - Step 5: Solve for x
x = 356,601,570,268.26/745,374.20 - Step 6: Final answer
x = 478,419.52
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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.