Finding the Fourth Proportional to 487,759.20, 731,638.80 and 409,027.20
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Solution
The fourth proportional to 487,759.20, 731,638.80 and 409,027.20 is: 613,540.80
Step by Step Solution
- Step 1: Write the proportion equation
487,759.20 : 731,638.80 = 409,027.20 : x - Step 2: Convert to fraction form
487,759.20/731,638.80 = 409,027.20/x - Step 3: Cross multiply
487,759.20x = 731,638.80 × 409,027.20 - Step 4: Simplify right side
487,759.20x = 299,260,169,775.36 - Step 5: Solve for x
x = 299,260,169,775.36/487,759.20 - Step 6: Final answer
x = 613,540.80
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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.