Finding the Fourth Proportional to 1,551,324,638.40, 2,326,986,957.60 and 516,290,146.80
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Solution
The fourth proportional to 1,551,324,638.40, 2,326,986,957.60 and 516,290,146.80 is: 774,435,220.20
Step by Step Solution
- Step 1: Write the proportion equation
1,551,324,638.40 : 2,326,986,957.60 = 516,290,146.80 : x - Step 2: Convert to fraction form
1,551,324,638.40/2,326,986,957.60 = 516,290,146.80/x - Step 3: Cross multiply
1,551,324,638.40x = 2,326,986,957.60 × 516,290,146.80 - Step 4: Simplify right side
1,551,324,638.40x = 1,201,400,437,940,989,440 - Step 5: Solve for x
x = 1,201,400,437,940,989,440/1,551,324,638.40 - Step 6: Final answer
x = 774,435,220.20
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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.