Finding the Fourth Proportional to 1,992,816,101.70, 2,989,224,152.55 and 887,418,821.70
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Solution
The fourth proportional to 1,992,816,101.70, 2,989,224,152.55 and 887,418,821.70 is: 1,331,128,232.55
Step by Step Solution
- Step 1: Write the proportion equation
1,992,816,101.70 : 2,989,224,152.55 = 887,418,821.70 : x - Step 2: Convert to fraction form
1,992,816,101.70/2,989,224,152.55 = 887,418,821.70/x - Step 3: Cross multiply
1,992,816,101.70x = 2,989,224,152.55 × 887,418,821.70 - Step 4: Simplify right side
1,992,816,101.70x = 2,652,693,775,253,102,592 - Step 5: Solve for x
x = 2,652,693,775,253,102,592/1,992,816,101.70 - Step 6: Final answer
x = 1,331,128,232.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.