Finding the Fourth Proportional to 521,485.96, 719,660.84 and 340,313.80
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Solution
The fourth proportional to 521,485.96, 719,660.84 and 340,313.80 is: 469,639.71
Step by Step Solution
- Step 1: Write the proportion equation
521,485.96 : 719,660.84 = 340,313.80 : x - Step 2: Convert to fraction form
521,485.96/719,660.84 = 340,313.80/x - Step 3: Cross multiply
521,485.96x = 719,660.84 × 340,313.80 - Step 4: Simplify right side
521,485.96x = 244,910,515,171.59 - Step 5: Solve for x
x = 244,910,515,171.59/521,485.96 - Step 6: Final answer
x = 469,639.71
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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.