Finding the Fourth Proportional to 1,418,982,121.58, 1,957,911,325.71 and 792,354,133.58
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Solution
The fourth proportional to 1,418,982,121.58, 1,957,911,325.71 and 792,354,133.58 is: 1,093,290,118.68
Step by Step Solution
- Step 1: Write the proportion equation
1,418,982,121.58 : 1,957,911,325.71 = 792,354,133.58 : x - Step 2: Convert to fraction form
1,418,982,121.58/1,957,911,325.71 = 792,354,133.58/x - Step 3: Cross multiply
1,418,982,121.58x = 1,957,911,325.71 × 792,354,133.58 - Step 4: Simplify right side
1,418,982,121.58x = 1,551,359,132,109,416,448 - Step 5: Solve for x
x = 1,551,359,132,109,416,448/1,418,982,121.58 - Step 6: Final answer
x = 1,093,290,118.68
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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.