Finding the Fourth Proportional to 718,890,638,220.10, 992,100,265,701.71 and 398,106,473,328.13
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Solution
The fourth proportional to 718,890,638,220.10, 992,100,265,701.71 and 398,106,473,328.13 is: 549,404,202,764.82
Step by Step Solution
- Step 1: Write the proportion equation
718,890,638,220.10 : 992,100,265,701.71 = 398,106,473,328.13 : x - Step 2: Convert to fraction form
718,890,638,220.10/992,100,265,701.71 = 398,106,473,328.13/x - Step 3: Cross multiply
718,890,638,220.10x = 992,100,265,701.71 × 398,106,473,328.13 - Step 4: Simplify right side
718,890,638,220.10x = 394,961,537,966,408,493,694,976 - Step 5: Solve for x
x = 394,961,537,966,408,493,694,976/718,890,638,220.10 - Step 6: Final answer
x = 549,404,202,764.82
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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.