Finding the Fourth Proportional to 438,719,483.36, 605,079,866.96 and 385,682,790.72
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Solution
The fourth proportional to 438,719,483.36, 605,079,866.96 and 385,682,790.72 is: 531,931,907.63
Step by Step Solution
- Step 1: Write the proportion equation
438,719,483.36 : 605,079,866.96 = 385,682,790.72 : x - Step 2: Convert to fraction form
438,719,483.36/605,079,866.96 = 385,682,790.72/x - Step 3: Cross multiply
438,719,483.36x = 605,079,866.96 × 385,682,790.72 - Step 4: Simplify right side
438,719,483.36x = 233,368,891,697,619,168 - Step 5: Solve for x
x = 233,368,891,697,619,168/438,719,483.36 - Step 6: Final answer
x = 531,931,907.63
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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.