Finding the Fourth Proportional to 943,699,361.79, 1,302,863,756.99 and 838,988,212.95
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Solution
The fourth proportional to 943,699,361.79, 1,302,863,756.99 and 838,988,212.95 is: 1,158,300,386.17
Step by Step Solution
- Step 1: Write the proportion equation
943,699,361.79 : 1,302,863,756.99 = 838,988,212.95 : x - Step 2: Convert to fraction form
943,699,361.79/1,302,863,756.99 = 838,988,212.95/x - Step 3: Cross multiply
943,699,361.79x = 1,302,863,756.99 × 838,988,212.95 - Step 4: Simplify right side
943,699,361.79x = 1,093,087,335,190,168,192 - Step 5: Solve for x
x = 1,093,087,335,190,168,192/943,699,361.79 - Step 6: Final answer
x = 1,158,300,386.17
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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.