Finding the Fourth Proportional to 2,146,608,220.80, 3,219,912,331.20 and 692,585,644.80
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Solution
The fourth proportional to 2,146,608,220.80, 3,219,912,331.20 and 692,585,644.80 is: 1,038,878,467.20
Step by Step Solution
- Step 1: Write the proportion equation
2,146,608,220.80 : 3,219,912,331.20 = 692,585,644.80 : x - Step 2: Convert to fraction form
2,146,608,220.80/3,219,912,331.20 = 692,585,644.80/x - Step 3: Cross multiply
2,146,608,220.80x = 3,219,912,331.20 × 692,585,644.80 - Step 4: Simplify right side
2,146,608,220.80x = 2,230,065,058,103,622,912 - Step 5: Solve for x
x = 2,230,065,058,103,622,912/2,146,608,220.80 - Step 6: Final answer
x = 1,038,878,467.20
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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.