Finding the Fourth Proportional to 1,492,993,007.70, 2,239,489,511.55 and 728,581,103.70
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Solution
The fourth proportional to 1,492,993,007.70, 2,239,489,511.55 and 728,581,103.70 is: 1,092,871,655.55
Step by Step Solution
- Step 1: Write the proportion equation
1,492,993,007.70 : 2,239,489,511.55 = 728,581,103.70 : x - Step 2: Convert to fraction form
1,492,993,007.70/2,239,489,511.55 = 728,581,103.70/x - Step 3: Cross multiply
1,492,993,007.70x = 2,239,489,511.55 × 728,581,103.70 - Step 4: Simplify right side
1,492,993,007.70x = 1,631,649,740,049,673,216 - Step 5: Solve for x
x = 1,631,649,740,049,673,216/1,492,993,007.70 - Step 6: Final answer
x = 1,092,871,655.55
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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.