Finding the Fourth Proportional to 555,220.48, 766,190.10 and 310,207.09
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Solution
The fourth proportional to 555,220.48, 766,190.10 and 310,207.09 is: 428,077.87
Step by Step Solution
- Step 1: Write the proportion equation
555,220.48 : 766,190.10 = 310,207.09 : x - Step 2: Convert to fraction form
555,220.48/766,190.10 = 310,207.09/x - Step 3: Cross multiply
555,220.48x = 766,190.10 × 310,207.09 - Step 4: Simplify right side
555,220.48x = 237,677,601,307.81 - Step 5: Solve for x
x = 237,677,601,307.81/555,220.48 - Step 6: Final answer
x = 428,077.87
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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.