Finding the Fourth Proportional to 638,233,811.43, 955,387,182.14 and 416,427,549.21
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Solution
The fourth proportional to 638,233,811.43, 955,387,182.14 and 416,427,549.21 is: 623,360,178.79
Step by Step Solution
- Step 1: Write the proportion equation
638,233,811.43 : 955,387,182.14 = 416,427,549.21 : x - Step 2: Convert to fraction form
638,233,811.43/955,387,182.14 = 416,427,549.21/x - Step 3: Cross multiply
638,233,811.43x = 955,387,182.14 × 416,427,549.21 - Step 4: Simplify right side
638,233,811.43x = 397,849,542,801,104,832 - Step 5: Solve for x
x = 397,849,542,801,104,832/638,233,811.43 - Step 6: Final answer
x = 623,360,178.79
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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.