Finding the Fourth Proportional to 470,980.80, 649,724.99 and 279,858.87
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Solution
The fourth proportional to 470,980.80, 649,724.99 and 279,858.87 is: 386,069.45
Step by Step Solution
- Step 1: Write the proportion equation
470,980.80 : 649,724.99 = 279,858.87 : x - Step 2: Convert to fraction form
470,980.80/649,724.99 = 279,858.87/x - Step 3: Cross multiply
470,980.80x = 649,724.99 × 279,858.87 - Step 4: Simplify right side
470,980.80x = 181,831,300,112.87 - Step 5: Solve for x
x = 181,831,300,112.87/470,980.80 - Step 6: Final answer
x = 386,069.45
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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.