Finding the Fourth Proportional to 1,328,620,512.80, 1,992,930,769.20 and 591,688,992.80
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Solution
The fourth proportional to 1,328,620,512.80, 1,992,930,769.20 and 591,688,992.80 is: 887,533,489.20
Step by Step Solution
- Step 1: Write the proportion equation
1,328,620,512.80 : 1,992,930,769.20 = 591,688,992.80 : x - Step 2: Convert to fraction form
1,328,620,512.80/1,992,930,769.20 = 591,688,992.80/x - Step 3: Cross multiply
1,328,620,512.80x = 1,992,930,769.20 × 591,688,992.80 - Step 4: Simplify right side
1,328,620,512.80x = 1,179,195,199,548,077,312 - Step 5: Solve for x
x = 1,179,195,199,548,077,312/1,328,620,512.80 - Step 6: Final answer
x = 887,533,489.20
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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.