Finding the Fourth Proportional to 871,393,079.40, 1,307,089,619.10 and 804,880,285.80
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Solution
The fourth proportional to 871,393,079.40, 1,307,089,619.10 and 804,880,285.80 is: 1,207,320,428.70
Step by Step Solution
- Step 1: Write the proportion equation
871,393,079.40 : 1,307,089,619.10 = 804,880,285.80 : x - Step 2: Convert to fraction form
871,393,079.40/1,307,089,619.10 = 804,880,285.80/x - Step 3: Cross multiply
871,393,079.40x = 1,307,089,619.10 × 804,880,285.80 - Step 4: Simplify right side
871,393,079.40x = 1,052,050,666,187,421,056 - Step 5: Solve for x
x = 1,052,050,666,187,421,056/871,393,079.40 - Step 6: Final answer
x = 1,207,320,428.70
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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.