Finding the Fourth Proportional to 1,404,102,511.70, 2,106,153,767.55 and 678,508,399.70
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Solution
The fourth proportional to 1,404,102,511.70, 2,106,153,767.55 and 678,508,399.70 is: 1,017,762,599.55
Step by Step Solution
- Step 1: Write the proportion equation
1,404,102,511.70 : 2,106,153,767.55 = 678,508,399.70 : x - Step 2: Convert to fraction form
1,404,102,511.70/2,106,153,767.55 = 678,508,399.70/x - Step 3: Cross multiply
1,404,102,511.70x = 2,106,153,767.55 × 678,508,399.70 - Step 4: Simplify right side
1,404,102,511.70x = 1,429,043,022,342,476,288 - Step 5: Solve for x
x = 1,429,043,022,342,476,288/1,404,102,511.70 - Step 6: Final answer
x = 1,017,762,599.55
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1.5x scale
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.