Finding the Fourth Proportional to 1,073,113,811.20, 1,609,670,716.80 and 659,865,289.60
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Solution
The fourth proportional to 1,073,113,811.20, 1,609,670,716.80 and 659,865,289.60 is: 989,797,934.40
Step by Step Solution
- Step 1: Write the proportion equation
1,073,113,811.20 : 1,609,670,716.80 = 659,865,289.60 : x - Step 2: Convert to fraction form
1,073,113,811.20/1,609,670,716.80 = 659,865,289.60/x - Step 3: Cross multiply
1,073,113,811.20x = 1,609,670,716.80 × 659,865,289.60 - Step 4: Simplify right side
1,073,113,811.20x = 1,062,165,833,701,871,616 - Step 5: Solve for x
x = 1,062,165,833,701,871,616/1,073,113,811.20 - Step 6: Final answer
x = 989,797,934.40
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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.