Finding the Fourth Proportional to 822,990.12, 1,135,269.12 and 478,787.40
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Solution
The fourth proportional to 822,990.12, 1,135,269.12 and 478,787.40 is: 660,460.60
Step by Step Solution
- Step 1: Write the proportion equation
822,990.12 : 1,135,269.12 = 478,787.40 : x - Step 2: Convert to fraction form
822,990.12/1,135,269.12 = 478,787.40/x - Step 3: Cross multiply
822,990.12x = 1,135,269.12 × 478,787.40 - Step 4: Simplify right side
822,990.12x = 543,552,550,265.09 - Step 5: Solve for x
x = 543,552,550,265.09/822,990.12 - Step 6: Final answer
x = 660,460.60
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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.