Finding the Fourth Proportional to 528,651.70, 729,530.20 and 286,929.08
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Solution
The fourth proportional to 528,651.70, 729,530.20 and 286,929.08 is: 395,957.17
Step by Step Solution
- Step 1: Write the proportion equation
528,651.70 : 729,530.20 = 286,929.08 : x - Step 2: Convert to fraction form
528,651.70/729,530.20 = 286,929.08/x - Step 3: Cross multiply
528,651.70x = 729,530.20 × 286,929.08 - Step 4: Simplify right side
528,651.70x = 209,323,431,054.60 - Step 5: Solve for x
x = 209,323,431,054.60/528,651.70 - Step 6: Final answer
x = 395,957.17
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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.