Finding the Fourth Proportional to 747,953,999.10, 1,121,930,998.65 and 726,430,638.60
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Solution
The fourth proportional to 747,953,999.10, 1,121,930,998.65 and 726,430,638.60 is: 1,089,645,957.90
Step by Step Solution
- Step 1: Write the proportion equation
747,953,999.10 : 1,121,930,998.65 = 726,430,638.60 : x - Step 2: Convert to fraction form
747,953,999.10/1,121,930,998.65 = 726,430,638.60/x - Step 3: Cross multiply
747,953,999.10x = 1,121,930,998.65 × 726,430,638.60 - Step 4: Simplify right side
747,953,999.10x = 815,005,051,814,455,296 - Step 5: Solve for x
x = 815,005,051,814,455,296/747,953,999.10 - Step 6: Final answer
x = 1,089,645,957.90
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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.