Finding the Fourth Proportional to 2,085,456,008.80, 3,128,603,917.20 and 611,592,968.80
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Solution
The fourth proportional to 2,085,456,008.80, 3,128,603,917.20 and 611,592,968.80 is: 917,512,596.69
Step by Step Solution
- Step 1: Write the proportion equation
2,085,456,008.80 : 3,128,603,917.20 = 611,592,968.80 : x - Step 2: Convert to fraction form
2,085,456,008.80/3,128,603,917.20 = 611,592,968.80/x - Step 3: Cross multiply
2,085,456,008.80x = 3,128,603,917.20 × 611,592,968.80 - Step 4: Simplify right side
2,085,456,008.80x = 1,913,432,157,919,657,216 - Step 5: Solve for x
x = 1,913,432,157,919,657,216/2,085,456,008.80 - Step 6: Final answer
x = 917,512,596.69
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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.