Finding the Fourth Proportional to 12,318,220.80, 18,475,581.60 and 4,231,569.60
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Solution
The fourth proportional to 12,318,220.80, 18,475,581.60 and 4,231,569.60 is: 6,346,753.38
Step by Step Solution
- Step 1: Write the proportion equation
12,318,220.80 : 18,475,581.60 = 4,231,569.60 : x - Step 2: Convert to fraction form
12,318,220.80/18,475,581.60 = 4,231,569.60/x - Step 3: Cross multiply
12,318,220.80x = 18,475,581.60 × 4,231,569.60 - Step 4: Simplify right side
12,318,220.80x = 78,180,709,440,879.36 - Step 5: Solve for x
x = 78,180,709,440,879.36/12,318,220.80 - Step 6: Final answer
x = 6,346,753.38
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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.