Finding the Fourth Proportional to 2,720,621,557.78, 3,754,052,811.57 and 1,531,119,587.42
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Solution
The fourth proportional to 2,720,621,557.78, 3,754,052,811.57 and 1,531,119,587.42 is: 2,112,717,138.32
Step by Step Solution
- Step 1: Write the proportion equation
2,720,621,557.78 : 3,754,052,811.57 = 1,531,119,587.42 : x - Step 2: Convert to fraction form
2,720,621,557.78/3,754,052,811.57 = 1,531,119,587.42/x - Step 3: Cross multiply
2,720,621,557.78x = 3,754,052,811.57 × 1,531,119,587.42 - Step 4: Simplify right side
2,720,621,557.78x = 5,747,903,792,003,949,568 - Step 5: Solve for x
x = 5,747,903,792,003,949,568/2,720,621,557.78 - Step 6: Final answer
x = 2,112,717,138.32
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1.5x scale
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.