Finding the Fourth Proportional to 3,151,872,908.80, 4,727,809,363.20 and 1,431,946,124.80
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Solution
The fourth proportional to 3,151,872,908.80, 4,727,809,363.20 and 1,431,946,124.80 is: 2,147,919,187.20
Step by Step Solution
- Step 1: Write the proportion equation
3,151,872,908.80 : 4,727,809,363.20 = 1,431,946,124.80 : x - Step 2: Convert to fraction form
3,151,872,908.80/4,727,809,363.20 = 1,431,946,124.80/x - Step 3: Cross multiply
3,151,872,908.80x = 4,727,809,363.20 × 1,431,946,124.80 - Step 4: Simplify right side
3,151,872,908.80x = 6,769,968,296,427,395,072 - Step 5: Solve for x
x = 6,769,968,296,427,395,072/3,151,872,908.80 - Step 6: Final answer
x = 2,147,919,187.20
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1.5x scale
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.