Finding the Fourth Proportional to 405,931.48, 608,430.66 and 272,650.84
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Solution
The fourth proportional to 405,931.48, 608,430.66 and 272,650.84 is: 408,662.89
Step by Step Solution
- Step 1: Write the proportion equation
405,931.48 : 608,430.66 = 272,650.84 : x - Step 2: Convert to fraction form
405,931.48/608,430.66 = 272,650.84/x - Step 3: Cross multiply
405,931.48x = 608,430.66 × 272,650.84 - Step 4: Simplify right side
405,931.48x = 165,889,130,530.75 - Step 5: Solve for x
x = 165,889,130,530.75/405,931.48 - Step 6: Final answer
x = 408,662.89
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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.