Finding the Fourth Proportional to 988,647,541.20, 1,482,971,311.80 and 759,771,867.60
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Solution
The fourth proportional to 988,647,541.20, 1,482,971,311.80 and 759,771,867.60 is: 1,139,657,801.40
Step by Step Solution
- Step 1: Write the proportion equation
988,647,541.20 : 1,482,971,311.80 = 759,771,867.60 : x - Step 2: Convert to fraction form
988,647,541.20/1,482,971,311.80 = 759,771,867.60/x - Step 3: Cross multiply
988,647,541.20x = 1,482,971,311.80 × 759,771,867.60 - Step 4: Simplify right side
988,647,541.20x = 1,126,719,883,163,507,968 - Step 5: Solve for x
x = 1,126,719,883,163,507,968/988,647,541.20 - Step 6: Final answer
x = 1,139,657,801.40
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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.