Finding the Fourth Proportional to 388,476,741.40, 582,715,112.10 and 386,209,259.80
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Solution
The fourth proportional to 388,476,741.40, 582,715,112.10 and 386,209,259.80 is: 579,313,889.70
Step by Step Solution
- Step 1: Write the proportion equation
388,476,741.40 : 582,715,112.10 = 386,209,259.80 : x - Step 2: Convert to fraction form
388,476,741.40/582,715,112.10 = 386,209,259.80/x - Step 3: Cross multiply
388,476,741.40x = 582,715,112.10 × 386,209,259.80 - Step 4: Simplify right side
388,476,741.40x = 225,049,972,118,415,040 - Step 5: Solve for x
x = 225,049,972,118,415,040/388,476,741.40 - Step 6: Final answer
x = 579,313,889.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.