Finding the Fourth Proportional to 1,128,916,804.13, 1,557,949,450.32 and 772,432,294.80
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Solution
The fourth proportional to 1,128,916,804.13, 1,557,949,450.32 and 772,432,294.80 is: 1,065,986,851.02
Step by Step Solution
- Step 1: Write the proportion equation
1,128,916,804.13 : 1,557,949,450.32 = 772,432,294.80 : x - Step 2: Convert to fraction form
1,128,916,804.13/1,557,949,450.32 = 772,432,294.80/x - Step 3: Cross multiply
1,128,916,804.13x = 1,557,949,450.32 × 772,432,294.80 - Step 4: Simplify right side
1,128,916,804.13x = 1,203,410,469,093,075,968 - Step 5: Solve for x
x = 1,203,410,469,093,075,968/1,128,916,804.13 - Step 6: Final answer
x = 1,065,986,851.02
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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.