Finding the Fourth Proportional to 528,438.24, 729,235.58 and 321,631.88
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Solution
The fourth proportional to 528,438.24, 729,235.58 and 321,631.88 is: 443,846.39
Step by Step Solution
- Step 1: Write the proportion equation
528,438.24 : 729,235.58 = 321,631.88 : x - Step 2: Convert to fraction form
528,438.24/729,235.58 = 321,631.88/x - Step 3: Cross multiply
528,438.24x = 729,235.58 × 321,631.88 - Step 4: Simplify right side
528,438.24x = 234,545,405,303.95 - Step 5: Solve for x
x = 234,545,405,303.95/528,438.24 - Step 6: Final answer
x = 443,846.39
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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.