Finding the Fourth Proportional to 451,728.99, 623,499.30 and 306,780.03
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Solution
The fourth proportional to 451,728.99, 623,499.30 and 306,780.03 is: 423,433.38
Step by Step Solution
- Step 1: Write the proportion equation
451,728.99 : 623,499.30 = 306,780.03 : x - Step 2: Convert to fraction form
451,728.99/623,499.30 = 306,780.03/x - Step 3: Cross multiply
451,728.99x = 623,499.30 × 306,780.03 - Step 4: Simplify right side
451,728.99x = 191,277,133,958.98 - Step 5: Solve for x
x = 191,277,133,958.98/451,728.99 - Step 6: Final answer
x = 423,433.38
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1.5x scale
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.