Finding the Fourth Proportional to 674,239.40, 930,478.65 and 387,759.71
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Solution
The fourth proportional to 674,239.40, 930,478.65 and 387,759.71 is: 535,124.66
Step by Step Solution
- Step 1: Write the proportion equation
674,239.40 : 930,478.65 = 387,759.71 : x - Step 2: Convert to fraction form
674,239.40/930,478.65 = 387,759.71/x - Step 3: Cross multiply
674,239.40x = 930,478.65 × 387,759.71 - Step 4: Simplify right side
674,239.40x = 360,802,131,485.19 - Step 5: Solve for x
x = 360,802,131,485.19/674,239.40 - Step 6: Final answer
x = 535,124.66
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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.