Finding the Fourth Proportional to 1,780,737,915.30, 2,457,409,270.86 and 987,775,684.98
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Solution
The fourth proportional to 1,780,737,915.30, 2,457,409,270.86 and 987,775,684.98 is: 1,363,125,423.99
Step by Step Solution
- Step 1: Write the proportion equation
1,780,737,915.30 : 2,457,409,270.86 = 987,775,684.98 : x - Step 2: Convert to fraction form
1,780,737,915.30/2,457,409,270.86 = 987,775,684.98/x - Step 3: Cross multiply
1,780,737,915.30x = 2,457,409,270.86 × 987,775,684.98 - Step 4: Simplify right side
1,780,737,915.30x = 2,427,369,125,799,939,072 - Step 5: Solve for x
x = 2,427,369,125,799,939,072/1,780,737,915.30 - Step 6: Final answer
x = 1,363,125,423.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.