Finding the Fourth Proportional to 1,172,493,652.11, 1,758,797,038.08 and 385,529,881.60
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Solution
The fourth proportional to 1,172,493,652.11, 1,758,797,038.08 and 385,529,881.60 is: 578,313,419.98
Step by Step Solution
- Step 1: Write the proportion equation
1,172,493,652.11 : 1,758,797,038.08 = 385,529,881.60 : x - Step 2: Convert to fraction form
1,172,493,652.11/1,758,797,038.08 = 385,529,881.60/x - Step 3: Cross multiply
1,172,493,652.11x = 1,758,797,038.08 × 385,529,881.60 - Step 4: Simplify right side
1,172,493,652.11x = 678,068,813,851,611,520 - Step 5: Solve for x
x = 678,068,813,851,611,520/1,172,493,652.11 - Step 6: Final answer
x = 578,313,419.98
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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.