Finding the Fourth Proportional to 389,430.36, 530,204.76 and 388,230.84
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Solution
The fourth proportional to 389,430.36, 530,204.76 and 388,230.84 is: 528,571.63
Step by Step Solution
- Step 1: Write the proportion equation
389,430.36 : 530,204.76 = 388,230.84 : x - Step 2: Convert to fraction form
389,430.36/530,204.76 = 388,230.84/x - Step 3: Cross multiply
389,430.36x = 530,204.76 × 388,230.84 - Step 4: Simplify right side
389,430.36x = 205,841,839,346.80 - Step 5: Solve for x
x = 205,841,839,346.80/389,430.36 - Step 6: Final answer
x = 528,571.63
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.