Finding the Fourth Proportional to 517,735,915.20, 776,603,872.80 and 245,638,123.20
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Solution
The fourth proportional to 517,735,915.20, 776,603,872.80 and 245,638,123.20 is: 368,457,184.80
Step by Step Solution
- Step 1: Write the proportion equation
517,735,915.20 : 776,603,872.80 = 245,638,123.20 : x - Step 2: Convert to fraction form
517,735,915.20/776,603,872.80 = 245,638,123.20/x - Step 3: Cross multiply
517,735,915.20x = 776,603,872.80 × 245,638,123.20 - Step 4: Simplify right side
517,735,915.20x = 190,763,517,784,443,520 - Step 5: Solve for x
x = 190,763,517,784,443,520/517,735,915.20 - Step 6: Final answer
x = 368,457,184.80
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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.