Finding the Fourth Proportional to 1,134,682,478.21, 1,699,640,173.75 and 719,945,818.84
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Solution
The fourth proportional to 1,134,682,478.21, 1,699,640,173.75 and 719,945,818.84 is: 1,078,406,391.32
Step by Step Solution
- Step 1: Write the proportion equation
1,134,682,478.21 : 1,699,640,173.75 = 719,945,818.84 : x - Step 2: Convert to fraction form
1,134,682,478.21/1,699,640,173.75 = 719,945,818.84/x - Step 3: Cross multiply
1,134,682,478.21x = 1,699,640,173.75 × 719,945,818.84 - Step 4: Simplify right side
1,134,682,478.21x = 1,223,648,836,620,203,776 - Step 5: Solve for x
x = 1,223,648,836,620,203,776/1,134,682,478.21 - Step 6: Final answer
x = 1,078,406,391.32
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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.