Finding the Fourth Proportional to 1,487,292,473.88, 2,052,422,405.10 and 809,086,938.84
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Solution
The fourth proportional to 1,487,292,473.88, 2,052,422,405.10 and 809,086,938.84 is: 1,116,517,557.99
Step by Step Solution
- Step 1: Write the proportion equation
1,487,292,473.88 : 2,052,422,405.10 = 809,086,938.84 : x - Step 2: Convert to fraction form
1,487,292,473.88/2,052,422,405.10 = 809,086,938.84/x - Step 3: Cross multiply
1,487,292,473.88x = 2,052,422,405.10 × 809,086,938.84 - Step 4: Simplify right side
1,487,292,473.88x = 1,660,588,160,948,989,440 - Step 5: Solve for x
x = 1,660,588,160,948,989,440/1,487,292,473.88 - Step 6: Final answer
x = 1,116,517,557.99
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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.