Finding the Fourth Proportional to 1,089,738,052.80, 1,634,607,079.20 and 762,582,973.20
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Solution
The fourth proportional to 1,089,738,052.80, 1,634,607,079.20 and 762,582,973.20 is: 1,143,874,459.80
Step by Step Solution
- Step 1: Write the proportion equation
1,089,738,052.80 : 1,634,607,079.20 = 762,582,973.20 : x - Step 2: Convert to fraction form
1,089,738,052.80/1,634,607,079.20 = 762,582,973.20/x - Step 3: Cross multiply
1,089,738,052.80x = 1,634,607,079.20 × 762,582,973.20 - Step 4: Simplify right side
1,089,738,052.80x = 1,246,523,526,470,104,064 - Step 5: Solve for x
x = 1,246,523,526,470,104,064/1,089,738,052.80 - Step 6: Final answer
x = 1,143,874,459.80
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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.