Finding the Fourth Proportional to 910,395.54, 1,256,158.29 and 523,136.13
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Solution
The fourth proportional to 910,395.54, 1,256,158.29 and 523,136.13 is: 721,820.09
Step by Step Solution
- Step 1: Write the proportion equation
910,395.54 : 1,256,158.29 = 523,136.13 : x - Step 2: Convert to fraction form
910,395.54/1,256,158.29 = 523,136.13/x - Step 3: Cross multiply
910,395.54x = 1,256,158.29 × 523,136.13 - Step 4: Simplify right side
910,395.54x = 657,141,786,498.02 - Step 5: Solve for x
x = 657,141,786,498.02/910,395.54 - Step 6: Final answer
x = 721,820.09
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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.