Finding the Fourth Proportional to 628,838.10, 867,767.99 and 342,357.57
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Solution
The fourth proportional to 628,838.10, 867,767.99 and 342,357.57 is: 472,437.88
Step by Step Solution
- Step 1: Write the proportion equation
628,838.10 : 867,767.99 = 342,357.57 : x - Step 2: Convert to fraction form
628,838.10/867,767.99 = 342,357.57/x - Step 3: Cross multiply
628,838.10x = 867,767.99 × 342,357.57 - Step 4: Simplify right side
628,838.10x = 297,086,938,668.40 - Step 5: Solve for x
x = 297,086,938,668.40/628,838.10 - Step 6: Final answer
x = 472,437.88
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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.