Finding the Fourth Proportional to 403,853.20, 605,779.80 and 325,121.20
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Solution
The fourth proportional to 403,853.20, 605,779.80 and 325,121.20 is: 487,681.80
Step by Step Solution
- Step 1: Write the proportion equation
403,853.20 : 605,779.80 = 325,121.20 : x - Step 2: Convert to fraction form
403,853.20/605,779.80 = 325,121.20/x - Step 3: Cross multiply
403,853.20x = 605,779.80 × 325,121.20 - Step 4: Simplify right side
403,853.20x = 196,951,855,511.76 - Step 5: Solve for x
x = 196,951,855,511.76/403,853.20 - Step 6: Final answer
x = 487,681.80
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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.