Finding the Fourth Proportional to 520,415.80, 780,623.70 and 165,465.70
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Solution
The fourth proportional to 520,415.80, 780,623.70 and 165,465.70 is: 248,198.55
Step by Step Solution
- Step 1: Write the proportion equation
520,415.80 : 780,623.70 = 165,465.70 : x - Step 2: Convert to fraction form
520,415.80/780,623.70 = 165,465.70/x - Step 3: Cross multiply
520,415.80x = 780,623.70 × 165,465.70 - Step 4: Simplify right side
520,415.80x = 129,166,446,957.09 - Step 5: Solve for x
x = 129,166,446,957.09/520,415.80 - Step 6: Final answer
x = 248,198.55
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Similar ratio
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1.5x scale
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.