Finding the Fourth Proportional to 815,665,571.09, 1,125,753,483.02 and 481,219,859.09
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Solution
The fourth proportional to 815,665,571.09, 1,125,753,483.02 and 481,219,859.09 is: 664,163,048.77
Step by Step Solution
- Step 1: Write the proportion equation
815,665,571.09 : 1,125,753,483.02 = 481,219,859.09 : x - Step 2: Convert to fraction form
815,665,571.09/1,125,753,483.02 = 481,219,859.09/x - Step 3: Cross multiply
815,665,571.09x = 1,125,753,483.02 × 481,219,859.09 - Step 4: Simplify right side
815,665,571.09x = 541,734,932,468,961,088 - Step 5: Solve for x
x = 541,734,932,468,961,088/815,665,571.09 - Step 6: Final answer
x = 664,163,048.77
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Double scale
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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.