Finding the Fourth Proportional to 790,415.26, 1,185,811.50 and 257,937.28
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Solution
The fourth proportional to 790,415.26, 1,185,811.50 and 257,937.28 is: 386,967.47
Step by Step Solution
- Step 1: Write the proportion equation
790,415.26 : 1,185,811.50 = 257,937.28 : x - Step 2: Convert to fraction form
790,415.26/1,185,811.50 = 257,937.28/x - Step 3: Cross multiply
790,415.26x = 1,185,811.50 × 257,937.28 - Step 4: Simplify right side
790,415.26x = 305,864,992,902.72 - Step 5: Solve for x
x = 305,864,992,902.72/790,415.26 - Step 6: Final answer
x = 386,967.47
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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.