Finding the Fourth Proportional to 528,658.09, 729,528.60 and 286,935.48
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Solution
The fourth proportional to 528,658.09, 729,528.60 and 286,935.48 is: 395,960.34
Step by Step Solution
- Step 1: Write the proportion equation
528,658.09 : 729,528.60 = 286,935.48 : x - Step 2: Convert to fraction form
528,658.09/729,528.60 = 286,935.48/x - Step 3: Cross multiply
528,658.09x = 729,528.60 × 286,935.48 - Step 4: Simplify right side
528,658.09x = 209,327,637,580.05 - Step 5: Solve for x
x = 209,327,637,580.05/528,658.09 - Step 6: Final answer
x = 395,960.34
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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.