Finding the Fourth Proportional to 1,309,627,129.80, 1,964,750,349.60 and 424,311,057.48
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Solution
The fourth proportional to 1,309,627,129.80, 1,964,750,349.60 and 424,311,057.48 is: 636,566,912.48
Step by Step Solution
- Step 1: Write the proportion equation
1,309,627,129.80 : 1,964,750,349.60 = 424,311,057.48 : x - Step 2: Convert to fraction form
1,309,627,129.80/1,964,750,349.60 = 424,311,057.48/x - Step 3: Cross multiply
1,309,627,129.80x = 1,964,750,349.60 × 424,311,057.48 - Step 4: Simplify right side
1,309,627,129.80x = 833,665,298,522,975,744 - Step 5: Solve for x
x = 833,665,298,522,975,744/1,309,627,129.80 - Step 6: Final answer
x = 636,566,912.48
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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.