Finding the Fourth Proportional to 718,890,638,383, 992,100,265,926.26 and 398,106,473,491
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Solution
The fourth proportional to 718,890,638,383, 992,100,265,926.26 and 398,106,473,491 is: 549,404,202,989.45
Step by Step Solution
- Step 1: Write the proportion equation
718,890,638,383 : 992,100,265,926.26 = 398,106,473,491 : x - Step 2: Convert to fraction form
718,890,638,383/992,100,265,926.26 = 398,106,473,491/x - Step 3: Cross multiply
718,890,638,383x = 992,100,265,926.26 × 398,106,473,491 - Step 4: Simplify right side
718,890,638,383x = 394,961,538,217,386,652,467,200 - Step 5: Solve for x
x = 394,961,538,217,386,652,467,200/718,890,638,383 - Step 6: Final answer
x = 549,404,202,989.45
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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.