Finding the Fourth Proportional to 528,543.09, 729,389.94 and 286,825.67
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Solution
The fourth proportional to 528,543.09, 729,389.94 and 286,825.67 is: 395,819.67
Step by Step Solution
- Step 1: Write the proportion equation
528,543.09 : 729,389.94 = 286,825.67 : x - Step 2: Convert to fraction form
528,543.09/729,389.94 = 286,825.67/x - Step 3: Cross multiply
528,543.09x = 729,389.94 × 286,825.67 - Step 4: Simplify right side
528,543.09x = 209,207,753,509.21 - Step 5: Solve for x
x = 209,207,753,509.21/528,543.09 - Step 6: Final answer
x = 395,819.67
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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.