Finding the Fourth Proportional to 521,412.75, 719,549.60 and 282,948.75
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Solution
The fourth proportional to 521,412.75, 719,549.60 and 282,948.75 is: 390,469.28
Step by Step Solution
- Step 1: Write the proportion equation
521,412.75 : 719,549.60 = 282,948.75 : x - Step 2: Convert to fraction form
521,412.75/719,549.60 = 282,948.75/x - Step 3: Cross multiply
521,412.75x = 719,549.60 × 282,948.75 - Step 4: Simplify right side
521,412.75x = 203,595,658,468.26 - Step 5: Solve for x
x = 203,595,658,468.26/521,412.75 - Step 6: Final answer
x = 390,469.28
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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.