Finding the Fourth Proportional to 822,559.70, 1,135,135.42 and 478,478.18
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Solution
The fourth proportional to 822,559.70, 1,135,135.42 and 478,478.18 is: 660,301.65
Step by Step Solution
- Step 1: Write the proportion equation
822,559.70 : 1,135,135.42 = 478,478.18 : x - Step 2: Convert to fraction form
822,559.70/1,135,135.42 = 478,478.18/x - Step 3: Cross multiply
822,559.70x = 1,135,135.42 × 478,478.18 - Step 4: Simplify right side
822,559.70x = 543,137,529,815.14 - Step 5: Solve for x
x = 543,137,529,815.14/822,559.70 - Step 6: Final answer
x = 660,301.65
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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.