Finding the Fourth Proportional to 438,905,858.65, 605,104,150.70 and 348,678,723.14
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Solution
The fourth proportional to 438,905,858.65, 605,104,150.70 and 348,678,723.14 is: 480,711,155.88
Step by Step Solution
- Step 1: Write the proportion equation
438,905,858.65 : 605,104,150.70 = 348,678,723.14 : x - Step 2: Convert to fraction form
438,905,858.65/605,104,150.70 = 348,678,723.14/x - Step 3: Cross multiply
438,905,858.65x = 605,104,150.70 × 348,678,723.14 - Step 4: Simplify right side
438,905,858.65x = 210,986,942,632,790,144 - Step 5: Solve for x
x = 210,986,942,632,790,144/438,905,858.65 - Step 6: Final answer
x = 480,711,155.88
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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.