Finding the Fourth Proportional to 1,775,190,643.20, 2,662,785,964.80 and 740,793,880.80
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Solution
The fourth proportional to 1,775,190,643.20, 2,662,785,964.80 and 740,793,880.80 is: 1,111,190,821.20
Step by Step Solution
- Step 1: Write the proportion equation
1,775,190,643.20 : 2,662,785,964.80 = 740,793,880.80 : x - Step 2: Convert to fraction form
1,775,190,643.20/2,662,785,964.80 = 740,793,880.80/x - Step 3: Cross multiply
1,775,190,643.20x = 2,662,785,964.80 × 740,793,880.80 - Step 4: Simplify right side
1,775,190,643.20x = 1,972,575,548,603,964,160 - Step 5: Solve for x
x = 1,972,575,548,603,964,160/1,775,190,643.20 - Step 6: Final answer
x = 1,111,190,821.20
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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.