Finding the Fourth Proportional to 528,420.94, 729,199.62 and 286,694.26
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Solution
The fourth proportional to 528,420.94, 729,199.62 and 286,694.26 is: 395,626.53
Step by Step Solution
- Step 1: Write the proportion equation
528,420.94 : 729,199.62 = 286,694.26 : x - Step 2: Convert to fraction form
528,420.94/729,199.62 = 286,694.26/x - Step 3: Cross multiply
528,420.94x = 729,199.62 × 286,694.26 - Step 4: Simplify right side
528,420.94x = 209,057,343,625.18 - Step 5: Solve for x
x = 209,057,343,625.18/528,420.94 - Step 6: Final answer
x = 395,626.53
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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.