Finding the Fourth Proportional to 621,118.07, 857,134.72 and 345,474.05
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Solution
The fourth proportional to 621,118.07, 857,134.72 and 345,474.05 is: 476,749.62
Step by Step Solution
- Step 1: Write the proportion equation
621,118.07 : 857,134.72 = 345,474.05 : x - Step 2: Convert to fraction form
621,118.07/857,134.72 = 345,474.05/x - Step 3: Cross multiply
621,118.07x = 857,134.72 × 345,474.05 - Step 4: Simplify right side
621,118.07x = 296,117,803,114.02 - Step 5: Solve for x
x = 296,117,803,114.02/621,118.07 - Step 6: Final answer
x = 476,749.62
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1.5x scale
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.