Finding the Fourth Proportional to 521,902.11, 720,157.59 and 306,963.75
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Solution
The fourth proportional to 521,902.11, 720,157.59 and 306,963.75 is: 423,570.38
Step by Step Solution
- Step 1: Write the proportion equation
521,902.11 : 720,157.59 = 306,963.75 : x - Step 2: Convert to fraction form
521,902.11/720,157.59 = 306,963.75/x - Step 3: Cross multiply
521,902.11x = 720,157.59 × 306,963.75 - Step 4: Simplify right side
521,902.11x = 221,062,274,417.36 - Step 5: Solve for x
x = 221,062,274,417.36/521,902.11 - Step 6: Final answer
x = 423,570.38
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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.