Finding the Fourth Proportional to 528,245.80, 728,974.92 and 286,527.76
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Solution
The fourth proportional to 528,245.80, 728,974.92 and 286,527.76 is: 395,405.99
Step by Step Solution
- Step 1: Write the proportion equation
528,245.80 : 728,974.92 = 286,527.76 : x - Step 2: Convert to fraction form
528,245.80/728,974.92 = 286,527.76/x - Step 3: Cross multiply
528,245.80x = 728,974.92 × 286,527.76 - Step 4: Simplify right side
528,245.80x = 208,871,550,923.78 - Step 5: Solve for x
x = 208,871,550,923.78/528,245.80 - Step 6: Final answer
x = 395,405.99
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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.