Finding the Fourth Proportional to 419,280,904.70, 628,921,357.05 and 128,147,464.70
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Solution
The fourth proportional to 419,280,904.70, 628,921,357.05 and 128,147,464.70 is: 192,221,197.05
Step by Step Solution
- Step 1: Write the proportion equation
419,280,904.70 : 628,921,357.05 = 128,147,464.70 : x - Step 2: Convert to fraction form
419,280,904.70/628,921,357.05 = 128,147,464.70/x - Step 3: Cross multiply
419,280,904.70x = 628,921,357.05 × 128,147,464.70 - Step 4: Simplify right side
419,280,904.70x = 80,594,677,401,640,960 - Step 5: Solve for x
x = 80,594,677,401,640,960/419,280,904.70 - Step 6: Final answer
x = 192,221,197.05
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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.