Finding the Fourth Proportional to 1,638,793,558.20, 2,458,190,337.30 and 1,449,387,985.80
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Solution
The fourth proportional to 1,638,793,558.20, 2,458,190,337.30 and 1,449,387,985.80 is: 2,174,081,978.70
Step by Step Solution
- Step 1: Write the proportion equation
1,638,793,558.20 : 2,458,190,337.30 = 1,449,387,985.80 : x - Step 2: Convert to fraction form
1,638,793,558.20/2,458,190,337.30 = 1,449,387,985.80/x - Step 3: Cross multiply
1,638,793,558.20x = 2,458,190,337.30 × 1,449,387,985.80 - Step 4: Simplify right side
1,638,793,558.20x = 3,562,871,541,692,269,568 - Step 5: Solve for x
x = 3,562,871,541,692,269,568/1,638,793,558.20 - Step 6: Final answer
x = 2,174,081,978.70
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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.