Finding the Fourth Proportional to 1,129,618,401.12, 1,693,457,163.36 and 392,592,558.24
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Solution
The fourth proportional to 1,129,618,401.12, 1,693,457,163.36 and 392,592,558.24 is: 588,551,566.95
Step by Step Solution
- Step 1: Write the proportion equation
1,129,618,401.12 : 1,693,457,163.36 = 392,592,558.24 : x - Step 2: Convert to fraction form
1,129,618,401.12/1,693,457,163.36 = 392,592,558.24/x - Step 3: Cross multiply
1,129,618,401.12x = 1,693,457,163.36 × 392,592,558.24 - Step 4: Simplify right side
1,129,618,401.12x = 664,838,680,033,356,032 - Step 5: Solve for x
x = 664,838,680,033,356,032/1,129,618,401.12 - Step 6: Final answer
x = 588,551,566.95
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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.