Finding the Fourth Proportional to 1,318,989.60, 1,819,627.92 and 774,879.84
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Solution
The fourth proportional to 1,318,989.60, 1,819,627.92 and 774,879.84 is: 1,068,994.78
Step by Step Solution
- Step 1: Write the proportion equation
1,318,989.60 : 1,819,627.92 = 774,879.84 : x - Step 2: Convert to fraction form
1,318,989.60/1,819,627.92 = 774,879.84/x - Step 3: Cross multiply
1,318,989.60x = 1,819,627.92 × 774,879.84 - Step 4: Simplify right side
1,318,989.60x = 1,409,992,991,509.13 - Step 5: Solve for x
x = 1,409,992,991,509.13/1,318,989.60 - Step 6: Final answer
x = 1,068,994.78
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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.