Finding the Fourth Proportional to 1,118,687.58, 1,543,673.79 and 628,579.26
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Solution
The fourth proportional to 1,118,687.58, 1,543,673.79 and 628,579.26 is: 867,374.72
Step by Step Solution
- Step 1: Write the proportion equation
1,118,687.58 : 1,543,673.79 = 628,579.26 : x - Step 2: Convert to fraction form
1,118,687.58/1,543,673.79 = 628,579.26/x - Step 3: Cross multiply
1,118,687.58x = 1,543,673.79 × 628,579.26 - Step 4: Simplify right side
1,118,687.58x = 970,321,328,599.60 - Step 5: Solve for x
x = 970,321,328,599.60/1,118,687.58 - Step 6: Final answer
x = 867,374.72
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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.