Finding the Fourth Proportional to 491,855,132.39, 678,758,434.80 and 268,836,684.84
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Solution
The fourth proportional to 491,855,132.39, 678,758,434.80 and 268,836,684.84 is: 370,993,724.38
Step by Step Solution
- Step 1: Write the proportion equation
491,855,132.39 : 678,758,434.80 = 268,836,684.84 : x - Step 2: Convert to fraction form
491,855,132.39/678,758,434.80 = 268,836,684.84/x - Step 3: Cross multiply
491,855,132.39x = 678,758,434.80 × 268,836,684.84 - Step 4: Simplify right side
491,855,132.39x = 182,475,167,418,819,264 - Step 5: Solve for x
x = 182,475,167,418,819,264/491,855,132.39 - Step 6: Final answer
x = 370,993,724.38
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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.