Finding the Fourth Proportional to 470,643.56, 649,543.38 and 279,657.08
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Solution
The fourth proportional to 470,643.56, 649,543.38 and 279,657.08 is: 385,959.61
Step by Step Solution
- Step 1: Write the proportion equation
470,643.56 : 649,543.38 = 279,657.08 : x - Step 2: Convert to fraction form
470,643.56/649,543.38 = 279,657.08/x - Step 3: Cross multiply
470,643.56x = 649,543.38 × 279,657.08 - Step 4: Simplify right side
470,643.56x = 181,649,404,984.13 - Step 5: Solve for x
x = 181,649,404,984.13/470,643.56 - Step 6: Final answer
x = 385,959.61
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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.