Finding the Fourth Proportional to 748,603.40, 1,122,953.70 and 394,309.40
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Solution
The fourth proportional to 748,603.40, 1,122,953.70 and 394,309.40 is: 591,489.70
Step by Step Solution
- Step 1: Write the proportion equation
748,603.40 : 1,122,953.70 = 394,309.40 : x - Step 2: Convert to fraction form
748,603.40/1,122,953.70 = 394,309.40/x - Step 3: Cross multiply
748,603.40x = 1,122,953.70 × 394,309.40 - Step 4: Simplify right side
748,603.40x = 442,791,199,674.78 - Step 5: Solve for x
x = 442,791,199,674.78/748,603.40 - Step 6: Final answer
x = 591,489.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.