Finding the Fourth Proportional to 621,684.78, 857,923.56 and 349,752.75
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Solution
The fourth proportional to 621,684.78, 857,923.56 and 349,752.75 is: 482,657.99
Step by Step Solution
- Step 1: Write the proportion equation
621,684.78 : 857,923.56 = 349,752.75 : x - Step 2: Convert to fraction form
621,684.78/857,923.56 = 349,752.75/x - Step 3: Cross multiply
621,684.78x = 857,923.56 × 349,752.75 - Step 4: Simplify right side
621,684.78x = 300,061,124,399.79 - Step 5: Solve for x
x = 300,061,124,399.79/621,684.78 - Step 6: Final answer
x = 482,657.99
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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.