Finding the Fourth Proportional to 528,044.75, 728,827.80 and 313,309.43
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Solution
The fourth proportional to 528,044.75, 728,827.80 and 313,309.43 is: 432,441.80
Step by Step Solution
- Step 1: Write the proportion equation
528,044.75 : 728,827.80 = 313,309.43 : x - Step 2: Convert to fraction form
528,044.75/728,827.80 = 313,309.43/x - Step 3: Cross multiply
528,044.75x = 728,827.80 × 313,309.43 - Step 4: Simplify right side
528,044.75x = 228,348,622,586.15 - Step 5: Solve for x
x = 228,348,622,586.15/528,044.75 - Step 6: Final answer
x = 432,441.80
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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.