Finding the Fourth Proportional to 453,415.20, 680,122.80 and 383,431.20
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Solution
The fourth proportional to 453,415.20, 680,122.80 and 383,431.20 is: 575,146.80
Step by Step Solution
- Step 1: Write the proportion equation
453,415.20 : 680,122.80 = 383,431.20 : x - Step 2: Convert to fraction form
453,415.20/680,122.80 = 383,431.20/x - Step 3: Cross multiply
453,415.20x = 680,122.80 × 383,431.20 - Step 4: Simplify right side
453,415.20x = 260,780,301,351.36 - Step 5: Solve for x
x = 260,780,301,351.36/453,415.20 - Step 6: Final answer
x = 575,146.80
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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.