Finding the Fourth Proportional to 2,659,394,911.20, 3,989,092,366.80 and 1,788,681,976.80
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Solution
The fourth proportional to 2,659,394,911.20, 3,989,092,366.80 and 1,788,681,976.80 is: 2,683,022,965.20
Step by Step Solution
- Step 1: Write the proportion equation
2,659,394,911.20 : 3,989,092,366.80 = 1,788,681,976.80 : x - Step 2: Convert to fraction form
2,659,394,911.20/3,989,092,366.80 = 1,788,681,976.80/x - Step 3: Cross multiply
2,659,394,911.20x = 3,989,092,366.80 × 1,788,681,976.80 - Step 4: Simplify right side
2,659,394,911.20x = 7,135,217,620,285,615,104 - Step 5: Solve for x
x = 7,135,217,620,285,615,104/2,659,394,911.20 - Step 6: Final answer
x = 2,683,022,965.20
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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.