Finding the Fourth Proportional to 1,198,087,984.79, 1,653,425,286.41 and 669,464,803.07
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Solution
The fourth proportional to 1,198,087,984.79, 1,653,425,286.41 and 669,464,803.07 is: 923,897,115.91
Step by Step Solution
- Step 1: Write the proportion equation
1,198,087,984.79 : 1,653,425,286.41 = 669,464,803.07 : x - Step 2: Convert to fraction form
1,198,087,984.79/1,653,425,286.41 = 669,464,803.07/x - Step 3: Cross multiply
1,198,087,984.79x = 1,653,425,286.41 × 669,464,803.07 - Step 4: Simplify right side
1,198,087,984.79x = 1,106,910,033,753,286,912 - Step 5: Solve for x
x = 1,106,910,033,753,286,912/1,198,087,984.79 - Step 6: Final answer
x = 923,897,115.91
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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.