Finding the Fourth Proportional to 694,430.95, 958,351.92 and 388,489.08
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Solution
The fourth proportional to 694,430.95, 958,351.92 and 388,489.08 is: 536,135.75
Step by Step Solution
- Step 1: Write the proportion equation
694,430.95 : 958,351.92 = 388,489.08 : x - Step 2: Convert to fraction form
694,430.95/958,351.92 = 388,489.08/x - Step 3: Cross multiply
694,430.95x = 958,351.92 × 388,489.08 - Step 4: Simplify right side
694,430.95x = 372,309,255,717.03 - Step 5: Solve for x
x = 372,309,255,717.03/694,430.95 - Step 6: Final answer
x = 536,135.75
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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.