Finding the Fourth Proportional to 528,163.76, 728,959.16 and 313,422.23
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Solution
The fourth proportional to 528,163.76, 728,959.16 and 313,422.23 is: 432,577.97
Step by Step Solution
- Step 1: Write the proportion equation
528,163.76 : 728,959.16 = 313,422.23 : x - Step 2: Convert to fraction form
528,163.76/728,959.16 = 313,422.23/x - Step 3: Cross multiply
528,163.76x = 728,959.16 × 313,422.23 - Step 4: Simplify right side
528,163.76x = 228,472,005,506.13 - Step 5: Solve for x
x = 228,472,005,506.13/528,163.76 - Step 6: Final answer
x = 432,577.97
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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.