Finding the Fourth Proportional to 1,312,800,745.94, 1,811,670,450.32 and 709,971,355.95
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Solution
The fourth proportional to 1,312,800,745.94, 1,811,670,450.32 and 709,971,355.95 is: 979,763,402.88
Step by Step Solution
- Step 1: Write the proportion equation
1,312,800,745.94 : 1,811,670,450.32 = 709,971,355.95 : x - Step 2: Convert to fraction form
1,312,800,745.94/1,811,670,450.32 = 709,971,355.95/x - Step 3: Cross multiply
1,312,800,745.94x = 1,811,670,450.32 × 709,971,355.95 - Step 4: Simplify right side
1,312,800,745.94x = 1,286,234,126,140,577,024 - Step 5: Solve for x
x = 1,286,234,126,140,577,024/1,312,800,745.94 - Step 6: Final answer
x = 979,763,402.88
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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.