Finding the Fourth Proportional to 521,013.99, 781,520.99 and 147,036.99
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Solution
The fourth proportional to 521,013.99, 781,520.99 and 147,036.99 is: 220,555.49
Step by Step Solution
- Step 1: Write the proportion equation
521,013.99 : 781,520.99 = 147,036.99 : x - Step 2: Convert to fraction form
521,013.99/781,520.99 = 147,036.99/x - Step 3: Cross multiply
521,013.99x = 781,520.99 × 147,036.99 - Step 4: Simplify right side
521,013.99x = 114,912,493,991.42 - Step 5: Solve for x
x = 114,912,493,991.42/521,013.99 - Step 6: Final answer
x = 220,555.49
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Double scale
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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.