Finding the Fourth Proportional to 553,639.68, 764,022.74 and 298,990.84
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Solution
The fourth proportional to 553,639.68, 764,022.74 and 298,990.84 is: 412,607.35
Step by Step Solution
- Step 1: Write the proportion equation
553,639.68 : 764,022.74 = 298,990.84 : x - Step 2: Convert to fraction form
553,639.68/764,022.74 = 298,990.84/x - Step 3: Cross multiply
553,639.68x = 764,022.74 × 298,990.84 - Step 4: Simplify right side
553,639.68x = 228,435,800,811.70 - Step 5: Solve for x
x = 228,435,800,811.70/553,639.68 - Step 6: Final answer
x = 412,607.35
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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.